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	Un polyedre ayant comme face 20 triangles		2000-08-02
		Sonia pose la question : J'aimerai savoir comment s'appelle un polyedre ayant comme face 20 triangles équilatéraux égaux. Chris Fisher lui répond.
	Maths		1999-01-11
		Stephane Roissard pose la question : Soit ABC un triangle dans lequel les trois médianes sont de meme longueur. Montrer que ce triangle est quilatéral. Jack LeSage lui répond.
	Question de trigonométrie		1997-12-11
		Jean-Pierre Quesnel pose la question : Je suis dans le désert et je parcours 1000 km à partir du point "A" jusqu'au point "B". Si je reviens au point "A" et fais une rotation de 8 degrés en faisant un autre 1000 km, quelle sera la distance en km entre les points "B" et "C". Diane Hanson et Penny Nom lui répond.
	A hexagon constructed from two triangles		2020-04-13
		sunny pose la question : Triangles AEC and FDB are equilateral triangles and EA= DF= 12cm. The polygon at the center of the star is a regular hexagon. What is the area of the hexagon? Penny Nom lui répond.
	A congruence theorem for two right angled triangles		2016-07-17
		Sayari pose la question : Hello. Is it possible for two right angled triangles to have the same length of base and height and a different hypotenuse? If not so, then why in the congruence criteria RHS the hypotenuse is given more importance? It can also be like- 'two triangles are congruent if they are right angled and have the same base and height.' Thank You. Penny Nom lui répond.
	A trough with a triangular cross section		2016-05-21
		Clarice pose la question : A trough having an equilateral triangle end sections has sides equal to 0.4 m and 7m long.what is the volume of the liquid in the container if the depth of the water is one half the depth of the trough? Penny Nom lui répond.
	The angles of a triangle		2015-12-17
		Faith pose la question : Does the measure of angle determine the length of its side? For example two angles are congruent then the sides are also congruent because from my understanding the angle determine the shape of triangle. Penny Nom lui répond.
	The length of a shadow		2015-08-01
		maaz pose la question : Hello I am having trouble with this question: Lizzie, who is 6 feet tall, stands in her driveway at night, exactly 24 feet from the base of a spotlight, and casts a shadow that is 12 feet long if her friend Hannah who is 5 feet tall decides to stand next to lizzie how long will her shadow be? Penny Nom lui répond.
	A barge of triangular cross section		2014-08-18
		tushar pose la question : a barge of triangular cross section is 20m long 12 m wide and 6m deep.its floats in SW at a draft if 4m find its displacement Penny Nom lui répond.
	The length of a shadow		2014-05-09
		vijay pose la question : A girl of height 80 cm is running away from the base of a lamp-post at a speed of 2 m/s. If the lamp is 4 m above the ground, find the length of her shadow after 5 seconds. Penny Nom lui répond.
	Two cones		2014-04-09
		c.j pose la question : what is the length of the radius of the LARGER cone(the LARGER cone has a slant height of 15) when the SMALLER cone has a radius of 8 and a slant height of 12ft ,please help. Penny Nom lui répond.
	Shadows of a father and son		2014-04-02
		esada pose la question : the father and son cast a shadow of 11 feet and 8 feet,respectively if the son is 4'8'' in height,how tall is the father? Penny Nom lui répond.
	A triangle construction		2013-07-27
		Nazrul pose la question : Two angles and the difference of the lengths of their opposite sides of a triangle are given. How can I draw the triangle. Please help me. Chris Fisher lui répond.
	A triangle and an incircle		2013-05-09
		Max pose la question : On my Geometry Test about tangent, chord, and secant lengths, my teacher gave an extremely difficult problem. It was a Circle inscribed in a Triangle with all triangle sides being tangents and lengths were given. My class was told to find the length of each segment of the line. The points on each line were the vertexes of the triangle, and the point where the line hits the circle. Please explain how someone could do this. Chris Fisher lui répond.
	Three right triangles		2012-07-26
		Jora pose la question : I am having a lot of difficulties with this question. Name: Jora Subject: Math Who are you: Student Chris Fisher lui répond.
	Squares and triangles		2011-12-06
		Liaqath pose la question : You have squares and triangles. Altogether there are 33 sides. How many squares do you have? How many triangles do you have? Penny Nom lui répond.
	Dividing a polygon into triangles		2011-04-16
		Foxie pose la question : You have a given regular polygon with n vertices and you divide it into triangles(using the vertices of the polygon) which each share at least one side with the polygon. How many distinct ways can you divide the polygon if its vertices are numbered? For n=3 it's 1 way, for n=4 it's 2 ways for n=5 5 ways, I'm not quite sure but think that for n=6 it's 12 ways... thanks in advance! Claude Tardif lui répond.
	Triangles with perimeter 16 cm		2011-02-22
		Chong pose la question : How many triangles (up yo congruence) with perimeter 16 cm and whose lengths of its side are integers? Chris Fisher lui répond.
	Calibrating a conical tank		2011-02-05
		Bill pose la question : Hi, I have a round tank with tapered sides where I know the diameter at the top and bottom. Is there a formula I can use to calculate the volume by measuring from the bottom up the side (at the angle of the side) to any given point? Thanks, Bill Stephen La Rocque and Penny Nom lui répond.
	The height of a lamp		2011-01-13
		Dorothy pose la question : I need to find the lamp height with casting shadow (base line of triangle where a boy 1.6m tall stands 3m from base of street lamp and has a 2m shadow. In other words, think of a right angle triangle with zero height starting at left, then 2m to right stands boy (1.6m high). Angle (hypotenuse) increases up to top of street lamp with 'x' height and 3m base. Penny Nom lui répond.
	Draw a figure with 16 triangles using only 6 line segements		2010-12-16
		Jill pose la question : How can you draw a figure with 16 triangles using only 6 line segements? Stephen La Rocque lui répond.
	How many triangles...?		2010-02-22
		deciree pose la question : Given 12 points, no 3 of them on a line with 6 red, 4 blue and 2 green points. a) How many triangles have vertices all the same color? b)How many triangles have vertices with each vertex a different color? c)How many triangles have at least one green vertex? thanks to lorraine! Penny Nom lui répond.
	Triangles		2010-02-19
		Wiliam pose la question : A box contains one 2 inch rod, one 3 inch rod, one 4 inch, and one 5 inch rod. What is the maximum number of different triangles that can be made using these rods as sides? Penny Nom lui répond.
	Triangles on a base of 2.4 meters		2009-12-26
		Allan pose la question : Please,How do I calculate the height of a triangle when I only know the width of the base line,It is 2.4 mtrs. Thankyou very much. Penny Nom lui répond.
	The line through D(-4, 0) and E(2, 6)		2009-11-16
		Rogerson pose la question : The point F is on the line through D(-4, 0) and E(2, 6) so that DF=4DE. Find the coordinates of F. Penny Nom lui répond.
	A paper towel roll		2009-08-19
		Jeff pose la question : I am making a spiral tube with paper that is 2" in dia. and 102" long I will be using paper that is slit 3" wide how many lineal feet of paper will I need to to cover the 102" I will be using 3 rolls of paper that will over lap the other by half to make a hard tube (paper core) in a roll of paper towels Thanks Jeff Penny Nom lui répond.
	The position of the fulcrum		2009-05-23
		jim pose la question : I think I need a formula. I need to know how far an object will be lifted. A beam is 246 inches long on one side of the fulcrum, and 41 inches on the other side, if I push down 36 inches on the long side of the beam, how much will the short side move up? Stephen La Rocque lui répond.
	Triangles within triangles		2009-02-24
		Mari pose la question : a large shaded triangle changes each day with a white triangle appearing in the center of each shaded one. If this pattern continues, how many white triangles will be there on the 6th day? On the 6th day, what fraction of the large outer triangle will be white?THANKS! Robert Dawson lui répond.
	Trig functions without geometric data		2009-02-24
		bob pose la question : I do not understand how it is possible to find the sine, cosine, or tangent of an angle if there is no hypotenuse, opposite or adjacent side?! Robert Dawson lui répond.
	A 30-60-90 triangle		2009-02-03
		Inez pose la question : If you have a 30-60-90 triangle and the only side you get is 73 and a 90 degree box, how do you find the area? Penny Nom lui répond.
	The volume of a feed hopper		2008-12-18
		John pose la question : I need to calculate the volume of a feed hopper, and I'm not sure how to break it down. The top of the hopper is 36" x 36", it is 30" deep, and ends at a 6" x 6" plate. One side of the hopper is straight top to bottom, of course tapering on two sides to meet at the plate. The other three sides angle down at about 75 degrees. I need to determine the cubic foot volume of this hopper (it is used for ground coffee) so I can configure a vibrator to knock down residual grounds. Thanks. Robert Dawson lui répond.
	3 equidistant points		2008-12-01
		Damien pose la question : How do you find 3 equidistant points (C,D,E) on a line between point A(Xa, Ya) and point B(Xb, Yb) so that AC, CD, DE and EB are all equal? Chris Fisher lui répond.
	The midpoint o a line segment		2008-11-15
		Jane pose la question : The vertices of a triangle are at (1,7), (6,-1) and (0,3). Find the coordinates of the midpoints of the sides. Penny Nom lui répond.
	The angles and sides of a triangle		2008-11-13
		JAMIE pose la question : a triangle with a side(b)37m an angle(C)70degrees and (a)79m find values of angles A and B and length of side c Stephen La Rocque lui répond.
	A flagpole and a yardstick		2008-11-07
		Wanda pose la question : One boy holds a yardstick vertically at a point 40 feet from the base of the flagpole. The other boy backs away from the pole to a point where he sights the top of the pole over the top of the yardstick. If his position is 1 ft 9 in from the yardstick and his eye level is 2 ft above the ground, find the height of the flagpole. Penny Nom lui répond.
	Joining vertices in a polygon		2008-08-18
		Megan pose la question : I'm trying to develop a relationship between the number of points of a regular polygon and the (a) number of lines you could draw between those points, (b) number of triangles you could draw, (c) number of quadrilaterals, etc. Penny Nom lui répond.
	Similar Triangles Given a Median		2008-08-17
		RAM pose la question : Sides AB , AC and median AD of a triangle ABC are respectively proportional to PQ PR and median PM of another triangle PQR. Show that ABC is similar to PQR Janice Cotcher lui répond.
	Similar triangles		2008-08-12
		ramarao pose la question : D is a point on side BC of a triangle ABC such that BD/CD=AB/AC. prove that AD is the bisector AD is the bisector of BAC Chris Fisher lui répond.
	The Pythagorean theorem with triangles rather than squares		2008-04-29
		Zachary pose la question : I need to figure out how to prove the pythagorean theoorem using equilateral triangles instead of using square. I know that A^2+B^2=C^2, but how do you get that by using equilateral triangles. I know the area of a triangle is BH1/2=Area. So what i need to know is how to derieve the formula of a triangle to get the pythagorean theorem Penny Nom lui répond.
	Similar triangles		2008-03-26
		Nisha pose la question : In triangle ABC, LM is parallel to AB. If AL=x-3,AC=2x,BM=x-2,BC=2x=3. Find x Penny Nom lui répond.
	A 6 pointed star		2008-03-04
		Siddharth pose la question : When 2 congruent equilateral triangles share a common center, their union can be a star If their overlap is a regular hexagon with an area of 60, what is the area of one of the original equilateral triangles? a) 60 b) 70 c) 80 d)90 e)100 Stephen La Rocque lui répond.
	Two right triangles		2008-02-18
		Amy pose la question : Hi, I have a problem that has me stumped. There are two right triangles that share the same adjacent side (AB) which is 240'. The right angles of each triangle are at the opposite ends of the shared side. The Opposite side (AC) of Triangle ABC is 180' and the Hypotenuse (CB) is 300'. The Opposite side (BD) of Triangle ABD is 100' and the Hypotenuse (AD) is 260'. How do I figure out where the hypotenuses intersect? Stephen La Rocque and Harley Weston lui répond.
	A flagpole and a statue		2008-02-09
		Krista pose la question : A flagpole casts a ten meter (m) shadow at the same time as a six metre (m) statute beside it casts a two metre shadow. What is the height of the flagpole?? Steve La Rocque and Penny Nom lui répond.
	Forces on an inclined plane		2008-01-10
		Ron pose la question : A body that weighs 540lbs is caused to slide up an inclined plane with a uniform velocity by a force that acts parallel to the plane. For each foot of horizontal distance, there is a vertical rise of 2in. If the coefficient of sliding friction is 0.16, what force is required to move the body? Stephen La Rocque lui répond.
	Lining up coins visually using geometry and trigonometry		2007-12-31
		Jessica pose la question : a) In what order would you arrange a penny, a nickel, a dime, a quarter, and a half-dollar so that they all have the same apparent size? The diameters of the coins, in thousandths of inches, are as follows: penny, 750; nickel, 835; dime, 705; quarter, 955; half-dollar, 1205. b) How should the coins be placed, if the distance between the dime and the half-dollar is 100 units? How far from thw dime should your eye be to see that all the coins have the same apparent size? c) What angle do the coins subtend when they have the same apparent size? Stephen La Rocque lui répond.
	How many triangles can be formed?		2007-12-21
		pankaj pose la question : Q.There is 2 lines parallel to each other. If 1st has 5 points in it and 2nd 3 points in it,how many triangles can be formed? Penny Nom lui répond.
	Smallest cone containing a 4cm radius inscribed sphere		2007-12-19
		Eva pose la question : A sphere with a radius of 4cm is inscribed into a cone. Find the minimum volume of the cone. Stephen La Rocque lui répond.
	Related Rates (streetlamp and shadow)		2007-11-09
		Casey pose la question : A street light is mounted at the top of a 15ft pole. A man 6ft tall walks away from the pole at a rate of 5ft per second. How fast is the tip of his shadow moving when he is 40ft from the pole? Stephen La Rocque and Penny Nom lui répond.
	Two triangles		2007-11-08
		Barbara pose la question : If the base of a larger triangle is 34 inches long, what is the length of side A of the smaller triangle? (the small triangle has on top the letter a on the right side of the triangle it has the letter b, and at the bottom of the small triangle it has the number 17) Penny Nom lui répond.
	Surface area of an open-ended cone		2007-10-16
		Lorne pose la question : What is the surface area of an open ended cone? Measured at 10' high, 16' diameter on the bottom and 2' diameter at the top. Stephen La Rocque lui répond.
	Similar triangles		2007-08-29
		James pose la question : Question: In the triangle ABC, X is a point on AC. AX = 15 m and XC = 5 m. The angle AXB is 60 degrees and the angle ABC is 120 degrees. Find the length of BC. I am sure to an extent that this has to do with similar triangles, but I am not certain. Harley Weston lui répond.
	Finding the radius of an inscribed circle		2007-07-05
		Maria pose la question : I need to find the radius of a circle which is inscribed inside an obtuse triangle ABC. I know all the angles and all the lengths of the triangle. Stephen La Rocque and Chris Fisher lui répond.
	Volume in a triangular water trough		2007-06-24
		David pose la question : A water trough has sloping sides of length 500mm making it triangular in cross section, with vertical ends. The width at the top is 600mm and the length is 2.0 metres. (i) Calculate the capacity of the trough, giving your answer accurate to the nearest litre. (ii) Find out the depth of the water when the trough is half full. Stephen La Rocque lui répond.
	Similar triangles		2007-02-21
		Vivienne pose la question : The lengths of the sides of a triangle are 8, 15, & 17. If the longest side of a simlar triangle is 51, what is the length of the shortest side? Stephen La Rocque and Penny Nom lui répond.
	Height of a right triangle?		2007-01-29
		Engelbert pose la question : The base of the right triangle is 50 ft. At the angle (on the base of the triangle) across from the right angle is labeled portion (a triangle within a triangle), the base of this little triangle is 10 ft. and the height is 6 ft. What equation can i use to solve this? Steve La Rocque and Haley Ess lui répond.
	In the shadow of a building		2007-01-11
		Bill pose la question : if a building b feet cast a shadow f feet long, then, at the same time of the day, a tree t feet high will cast a shadow, how many feet long? Stephen La Rocque lui répond.
	How do the perimeters of the two pentagons compare?		2007-01-02
		Robert pose la question : If the area of one pentagon is eighty-one times the area of another pentagon, how do the perimeters of the two pentagons compare? Penny Nom lui répond.
	The height of a building		2006-11-19
		Sweetie pose la question : I have to figure out the measure of the water towers antenna on my schools campus using up to two items created by me and a manual. I don't know far away we are going to have to be. I need to have a fool proof way to figure out the distance to the tower. I have an idea using trigonometry but its really roughly estimated. Do you have any suggestions? Stephen La Rocque lui répond.
	An equilateral triangle has been wedged in between two circles.		2006-09-22
		Kim pose la question : An equilateral triangle has been wedged in between two circles. How does the diameter of the smaller circle compare to the diameter of the larger circle. image: circle inside of an equilateral triangle touching all sides of the triangle; both the triangle and the circle inside are placed into a larger circle where the triangle vertices all touch the circle Penny Nom lui répond.
	The length of 2 sides of a triangle		2006-09-15
		Lonnie pose la question : I need to know how to figure the length of 2 sides of a triangle, as the following example: The length of the bottom is 12' and the angles are 45, 45 I need to know how long the other 2 sides must be to get an angle of 90 at the top. Stephen La Rocque lui répond.
	How fast is the water level rising		2006-08-12
		Erin pose la question : Water runs into a conical tank at the rate of 9ft3/min. The tank stands point down and has a height of 10 ft. and a base radius of 5 ft. How fast is the water level rising when the water is 6 ft. deep? (V=1/3 pi r2 h). Penny Nom lui répond.
	Designing a garage		2006-06-08
		A builder pose la question : I'm currently designing a garage and came upon this interesting math problem. I've tried using various methods to solve it but have so far been unsuccessful. I've included a picture as its far easier to show you my question than explain it verbally. I realize it could be done by trial and error but i'm looking for a real solution. Stephen La Rocque and Penny Nom lui répond.
	The volume of water in a cone		2006-03-21
		Ghulam pose la question : A vessel has the shape of an inverted cone.The radius of the top is 8 cm and the height is 20 cm. Water is poured in to a height of x cm.Show that if the volume of the water is V cubic cm,then V=(4/75)pi x3. Penny Nom lui répond.
	Heights and shadows		2006-03-06
		Debra pose la question : A person is 7 ft tall and his shadow is 10 ft tall. using the same info what is the shadow of a person who is 5ft tall Stephen La Rocque lui répond.
	How do you find the angles in a triangle?		2006-01-27
		Keith pose la question : How do you find the angles in a triangle if you know the lengths of the sides? Chris Fisher and Penny Nom lui répond.
	Subdividing a polygon into triangles		2006-01-26
		Adam pose la question : is there an algorithm to divide a regular polygon into N equilateral triangles having the same area (no limit on N), or if not, an algorithm to divide a regular polygon into N triangles having the same shape and size? Chris Fisher lui répond.
	The third side of a triangle		2006-01-25
		Bob pose la question : Is there any way to obtain the third side of a triangle when 2 sides are the same length (2.18 inches). I also need to find the angles. Penny Nom lui répond.
	Triangles with integer sides		2005-11-04
		Tammy pose la question : I am trying to find another pair of integer sided isosceles triangles, not the same as the ones listed below, with equal areas. (5,5,8) (5,5,6) Chri Fisher lui répond.
	A 30-60-90 triangle		2005-09-11
		Gary pose la question : I have the length of only 1 side of triangle with angles of 30-60-90 degrees. How can I find the length of the other 2 sides? Penny Nom lui répond.
	The centroid of a triangle		2005-04-07
		Maria pose la question : Q3)find the coordinates of the centroid of triangle ABC i want your help here to solve the 3rd question i got stuck. Penny Nom lui répond.
	Solving triangles		2004-10-30
		Allen pose la question : Solve the following triangles. Given 1. B = 20 Degrees, a = 25, b = 16 2. A = 35 Degrees, b = 2, c = 3 3. A = 32 Degrees, C = 44, c = 20 Harley Weston lui répond.
	Water in a cone		2004-07-28
		A student pose la question : A vertically inverted cone( i.e. vertex down) has a radius 7 inches and height 24 inches. Water is filled to one third of its height .Find the ht of water when cone is turned upside down Penny Nom lui répond.
	A Fibonacci triangle		2004-04-25
		Marcelle pose la question : Is it possible to construct a triangle with sides that are three consecutive Fibonacci numbers? Walter Whiteley lui répond.
	The sum of angles in a triangle		2004-04-06
		A student pose la question : How can u prove sum of angles in a triangle equal to 180 degrees? Penny Nom lui répond.
	A geometry problem		2004-03-04
		Jennifer pose la question : I need help with this problem: Square ABCD has side length 2. A semicircle with diameter AB is constructed inside the square, and the tangent to the semicircle from C intersects side AD at E. What is the exact length of CE?o Chris Fisher lui répond.
	Napoleon's theorem		2004-02-27
		David pose la question : How do i prove this : For any triangle, if you make 3 equillateral triangles using the sides of the the original triangle, the central points of the 3 tringles another triangle that is equillateral.z Chris Fisher and Penny Nom lui répond.
	The area of a triangle		2003-12-01
		A student pose la question : Find the Area of Triangle ABC A(-3,2) B(4,0) C(0,8) Penny Nom lui répond.
	Two chords		2003-10-07
		Lori pose la question : Chords AB and CD of circle O intersect at E. If AE=4, AB=5, CE=2, Find ED. Penny Nom lui répond.
	Water in a cone		2003-08-12
		Adrienne pose la question : Water is poured into a tank in the shape of an inverted right circular cone.ð The height of the tank is 8 m and its radius at the top is 4 m. a. Draw and label a picture to represent this situation.ð (I know how to do this) b. Identify all variable quantities. (h = 8m, r = 4m) c. Find an equation that relates the variable quantities, and reduce the number of variable quantities to two. I was thinking about the equation V = 1/3 pi r2 h, which is the Volume of a cone, but I am stumped as to how I am supposed to "reduce the number of variable quantities to two." Can you point me in the right direction? Penny Nom lui répond.
	An equilateral triangle		2003-03-17
		Shirley pose la question : An equilateral triangle is one in which all three sides are of equal length. If two vertices of an equilateral triangle are (0,4) and (0,0), find the third vertex. How many of these triangles are possible? Penny Nom lui répond.
	The area of an isoceles triangle		2003-02-07
		A student pose la question : I have to find the area of an isoceles triangle with one angle side of 30 degrees, and length of base 5. Could you please help me solve this problem? Penny Nom lui répond.
	A Circle is evenly divided into six equal triangles		2002-09-16
		Marilynn pose la question : A Circle is evenly divided into six equal triangles leaving an area between the outside of the circle and the one side of the triangle. This area is measured as 3.14. What is the length of the radius, one line on the triangle? Paul Betts lui répond.
	The area of a triangle		2002-09-07
		Phill pose la question : How do you find the area of a equilateral and other triangles? Penny Nom lui répond.
	Find the angle measures		2002-05-18
		Amanda pose la question : In triangle ABC; the measure of angle A is 20 degrees more than twice the angle B. The measure of angle C Is five times angle B. Find the angle measures. Penny Nom lui répond.
	Two triangles		2002-04-03
		Scott pose la question : Consider 2 triangles: Triangle PMB and Triangle PLA. Triangle PLA is contained within Triangle PMB. Side LA is parallel to Side MB. Point L is located on Side PM. Point A is located on Side PB. If the ratio PL:LM = 5, then what is PB:PA ?? harley Weston lui répond.
	Similar triangles		2001-09-08
		Dave pose la question : I am standing on the bank of a river ( whose banks are parallel here) directly opposite a boathouse, B, on the opposite bank. I walk along the bank of the river past a signpost, S, until I reach a point C distant 60 metres from where I started walking. I then walk away from the bank, at right angles to the bank, until I reach a shady tree at D. Attached to teh tree is a sign stating that this spot is 45 metres from the signpost. C is 36 metres beyond S and B and S are in line from D. (a) How far did I walk away from the bank of the river?? (b) Calculate the width of the river? Penny Nom lui répond.
	An inequality involving triangles		2001-06-12
		Sandra pose la question : The triangle inequality guarantees that the sum of the lengths of two sides of a triangle is greater than the length of the third. As a consequence, if x and y are legs of a right triangle, with x less than or equal to y, and z the hypotenuse, then x + y is greater than z, so x is greater than z - y. Under what circumstances will x is greater than 2(z - y) be true? Chris Fisher and Penny Nom lui répond.
	Geometry problems involving triangles		2001-06-07
		Sandi pose la question : Find the radius of the largest circle contained in a right triangle whose legs are 8 and 15 and hypotenuse is 17. If the right triangle has legs a and b and hypotenuse c, find an expression for the radius of the circle. Penny Nom lui répond.
	The angles in a triangle		2001-05-11
		Nikki pose la question : Find the measure, to the nearest degree, of each angle of a triangle with sides of the given lengths. 26, 35, 40 Penny Nom lui répond.
	Triangles and fractions		2001-04-27
		Constance pose la question : My name is Constance and I am thirteen years old (I am a student). The question that I am queering about I don't understand why you do ONE HALF x the base x the width WHEN YOU WANT TO FIND the area of a triangle? My second question is if you multiply one half and 10 together why does it come out as 5? Penny Nom lui répond.
	How tall is the tree?		2001-03-02
		Ronda pose la question : a tree's shadow is 42 ft. long. There is a stop sign that is right next to it and it is 18 ft. tall and it's shadow is 12 ft. long. How tall is the tree? Penny Nom lui répond.
	A lampost and its shadow		2000-12-24
		Laura pose la question : A lamppost line EC casts a shadow line AC. A 30 cm ruler line DB has been moved from A so that it's shadow falls just within the shadow of the lamppost. Suppose the length of the ruler's shadow is 42 cm. What is the slope of the imaginary line AE? Suppose the lamppost's shadow is 15 m. long. How tall is the lamppost? Penny Nom lui répond.
	Is this a right triangle?		2000-12-08
		Alicia pose la question : How would you set-up and answer a problem like these one? Triangle ABC has vertices A(-2,2), B(1,-2), and C (1,2). Use slopes to determine if the triangle is a right triangle. Penny Nom lui répond.
	Triangles and trigonometry		2000-11-30
		Mose pose la question : If I have a right triangle, and I know the lengths of all three sides, is there a formula that will allow me to determine the measurements of the 2 non right angles? Harley Weston lui répond.
	Length of a shadow		2000-11-01
		Jessy pose la question : A man who is six feet tall is walking away from a street light that is fifteen feet tall. How long is the man's shadow when he is ten feet away from the light? Penny Nom lui répond.
	A centroid problem		2000-06-02
		Kerstin pose la question : An isoceles triangle has sides measuring 13 cm, 13 cm, and 10 cm. Find the distance from the centroid to the vertex of a base angle. Harley Weston lui répond.
	The side length ratios of some triangles		2000-04-04
		Alexis Lockwood pose la question : I am doing a project for my Math 30B class regarding the side length ratios of 45-45-90 degree and 30-60-90 degree triangles. I would really appreciate any assistance in answering the following questions, or even direction to an appropriate web site or resource on the matter. Harley Weston lui répond.
	Area of a quadrilateral		1999-11-19
		Zane Cram pose la question : I need the formula to calculate the area of an irregular sided rectangle. Each side has a different measurement or length. Walter Whiteley lui répond.
	Isosceles triangles		1999-10-12
		Amber pose la question : In defining the types of triangles, our class was stumped by a question asked by one of the student. Maybe you could help. The definition of an equilateral triangle is a triangle with three congruent sides. The definiton of an isosceles triangle is a triangle with at LEAST two congruent sides. The question is, if an isosceles triangle only requires at Least two of the sides to be congruent, could an equilateral triangle be called an isosceles triangle? Penny Nom, Walter Whiteley and Chris Fisher lui répond.
	Two 12-sided polygons		1999-09-25
		Kelly Boulton pose la question : Two 12-sided polygons are similar. A side of the larger polygon is 3 times as long as the corresponding side of the smaller polygon. wHAT IS the ratio of the area of the larger polygon to the area of the smaller polygon. Walter Whiteley lui répond.
	Degrees and triangles		1999-09-09
		Sandra Mills pose la question : Are there any triangles which are not 180 degrees? I am also in need of information on the history of degree measure for an angle. Walter Whiteley lui répond.
	A ladder problem		1999-04-22
		Michael Blade pose la question : There is a cube box 3feet x 3feet x 3ft resting against a vertical wall on level ground. Resting against the outside corner of the box is a ladder 10 feet tall, this ladder is of course resting on the ground but also against the outside corner of the box and rests on the wall. The question- the ladder is divided into two unequal section bounded by the box to the ground and the box to the wall. what are those dimensions? Penny Nom lui répond.
	Shimin's Geometry Problem		1997-12-02
		Ong Shimin pose la question : ABCD is a rectangle. X and Y are the midpoints of BC and CD respectively. W is a point on AB such that AW : WB = 2 : 1. Z is a point on AD such that AZ : ZD = 2 : 1. WY intersects XZ at O. If the area of triangle WOZ is 84 centimeters squared, find the area of triangle XOY. Chris Fisher lui répond.
	Triangles, The Pythagorean Theorem and Pizzas.		1997-02-23
		Sherryle Mathis pose la question : I am a graduating senior presently teaching geometry as part of my student teaching. I will do my CUP on Right Triangles and Pythagorean theorem. I am looking for a fun activity as part of my unit plan. Walter Whiteley lui répond.

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