51 articles trouvés pour ce sujet.
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Are all quadrilaterals the same? |
2020-05-27 |
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eva pose la question :
are all quadrilaterals the same?
Penny Nom lui répond. |
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A quadrilateral inside a square |
2019-01-02 |
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Swetha pose la question :
In 2*2 square ABCD, E is the mid point of the side AD. F is a
point in BE.CF is perpendicular to BE. Find the area of the quadrilateral CDEF
Penny Nom lui répond. |
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Quadrilateral ABCD is inscribed in a circle |
2017-09-11 |
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Joie pose la question :
Quadrilateral ABCD is inscribed in a circle such that side DA is the diameter. AB=2m., BC=4m., CD=6m., angle BAD=75.93degrees. Find the area of the quadrilateral.
Penny Nom lui répond. |
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Quadrilateral |
2016-06-14 |
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Muhib pose la question :
Is there a quadrilateral with 0 sets of parallel sides.
Penny Nom lui répond. |
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The area of a 4-sided lot |
2016-05-25 |
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prasad pose la question :
How to find area of a land whose sides are 41ft,33ft,32.3ft and 33.2 ft. Pl give me the formula and proof.
Penny Nom lui répond. |
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The midpoints of the sides of a quadrilateral |
2016-02-05 |
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Andrea pose la question :
The segments, joining, in order the midpoints of consecutive sides of a quadrilateral form a parallelogram.
Penny Nom lui répond. |
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A quadrilateral inside a square |
2016-01-30 |
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Subrahmanya pose la question :
In a square ABCD of side 6 units P, Q are mid points of BC, CD respectively. The line segments BQ, DP intersect in R then find the area of the quadrilateral ABRD using only plane geometry.
Chris Fisher lui répond. |
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The area of a quadrilateral |
2015-03-11 |
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Joel pose la question :
Diagonal ac of quadrilateral ABCD is 60cm and the lengths of perpendiculars to
It from the opposite vertices are 4.2cm and 5.8 cm find the area of the quadrilateral
ABCD
Penny Nom lui répond. |
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The area of a quadrilateral |
2014-08-06 |
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Rahul pose la question :
find the area of the quadrilateral whose side measure9cm,40cm,28cm,15cm and in which the angle between the first 2 sides is a right angle
Penny Nom lui répond. |
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A cyclic quadrilateral |
2014-03-28 |
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Carly pose la question :
Suppose ABCD is a cyclic quadrilateral, i.e A, B, C, and D are the points on a circle,
given in order going around the circle. Show that if we join each of A, B, C, and D to the orthocentre
of the triangle formed by the other three, then the resulting line segments all intersect in a common midpoint.
Thank you.
Chris Fisher lui répond. |
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The fourth side of a quadrilateral |
2014-01-23 |
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joanna pose la question :
left vertical measurement 2560mm
right vertical measurement 1850mm
base horizontal measurement 1750mm
question - what will the 4th measurement be please.
using a scale drawing I make it approx 1900mm but require an accurate measurement
regards
Joanna
Penny Nom lui répond. |
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The area of a quadrilateral |
2013-12-21 |
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khushboo pose la question :
Find the area of quadrilateral pqrs in which
angle QPS=90°,PQ=12cm, PS=9cm, QR=8cm and SR=17cm.
(Hint: PQRS has two parts)
Penny Nom lui répond. |
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A circle insubscribed in an isosceles trapezoid |
2013-12-08 |
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Bob pose la question :
A circle is insubscribed in an isosceles trapezoid, with
parallel lengths of 8cm and 18cm.
What is the lengths of sloping edges and why?
Robert Dawson lui répond. |
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The area of a quadrilateral |
2012-04-21 |
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Rajat pose la question :
calculate the area ABCD in which AB is 48'1'',BC is 98'4'',CD is 61'4'',DA is 102'10'',AC is 110'3'',BD is 116'9''.
Penny Nom lui répond. |
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If a parallelogram is a cyclic quadrilateral then it is a rectangle |
2012-02-01 |
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Kim pose la question :
Show that if a parallelogram is a cyclic quadrilateral then it is a rectangle.
Hint: Observe that in a parallelogram ABCD we always have Triangle ABC is congruent to Triangle CDA.
Robert Dawson and Chris Fisher lui répond. |
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A cyclic quadrilateral |
2011-08-15 |
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Tim pose la question :
Hi! I've been working on this for a while and I'm quite stuck. If anyone can help that would be great.
The sides BC and AD of a quadrilateral ABCD are parallel. A circle meets the side AB at B and E and the side CD at C and F. Prove that the quadrilateral AEFD is cyclic.
Chris Fisher lui répond. |
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Exactly two lines of symmetry |
2010-04-11 |
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debbie pose la question :
i am looking for a quadrilateral with exactly two lines of symmetry. please help! thank you.
Tyler Wood lui répond. |
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A quadrilateral with 4 known sides and 1 known angle |
2010-03-19 |
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samuel pose la question :
Name: Samuel
Status: Student
I have a quadrilateral with 4 known sides and 1 known angle, and I'm trying to evaluate the other angles of my quadrilateral.
By the law of cosines, I can easily find my opposite angle (using the diagonal as a basis for the equation).
However, to find the two remaining angles, I have found no other way so far than to use the other diagonal, which can be found with the equation attached (from geometry atlas).
Is there any simpler way?
Robert Dawson and Harley Weston lui répond. |
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An irregular quadrilateral |
2009-10-29 |
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riya pose la question :
what is irregular quadrilateral?
Penny Nom lui répond. |
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A cyclic quadrilateral |
2009-01-23 |
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Murtaza pose la question :
Line ATB touches a circle at T and TC is a diameter. AC and BC cut the circle at D and E respectively.Prove that the quadrilateral ADEB is cyclic.
Robert Dawson and Chris Fisher lui répond. |
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The area of a quadrilateral shape |
2009-01-19 |
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craig pose la question :
how do u work out the area of a quadrilateral shape
Robert Dawson lui répond. |
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A quadrilateral with two pairs of congruent sides |
2008-12-10 |
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nicole pose la question :
what is the name of a figure that has 2 sides that measure 25 feet each and 2 sides that measure 10 feet each?
Robert Dawson lui répond. |
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A quadrilateral with exactly 1 pair of parallel sides and no congruent sides |
2008-12-10 |
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alie pose la question :
a quadrilateral with exactly 1 pair of parallel sides and no congruent sides is what?
Robert Dawson lui répond. |
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The area of a quadrilateral |
2008-09-11 |
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Mike pose la question :
How do I find the area of a quadrilateral that has one sloped side?
Penny Nom lui répond. |
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A convex quadrilateral in spherical geometry |
2008-07-09 |
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Joan pose la question :
What is the min and max number of obtuse angles possible ia a convex quadrilateral in Spherical Geometry?
I know that the Saccheri has 2 obtuse angles and the Lambert has one, but are there other possibilities?
Thanks for your help.
Chris Fisher lui répond. |
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A rectangle |
2008-06-26 |
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SEBASTIAN pose la question :
How to arrange quadrilateral in the form of a rectangle?
Penny Nom lui répond. |
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A quadrilateral |
2008-05-08 |
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reena pose la question :
two exterior angles quadrilateral are 100 degrees 110 degrees each. two remaing interior one angle twice size other find size of each angle
Penny Nom lui répond. |
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Proving a quadrilateral is a rhombus |
2007-12-03 |
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Jeanie pose la question :
How do you prove that a quadrilateral is a rhombus because the diagonals
of the quadrilateral are perpendicular and bisect each other using the 2-column
proof method?
Stephen La Rocque lui répond. |
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Area of a quadrilateral |
2007-10-10 |
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Courtney pose la question :
how would i find the area of a quadrilateral..
the sides are a (/) is 6cm, b (—) is 9 cm, and c (\) is 7 cm..
the angle between a and b is 140 degrees and b and c is 115 degrees..
Stephen La Rocque lui répond. |
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A convex quadrilateral |
2007-09-24 |
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alex pose la question :
if a convex quadrilateral ABCD is set up so that angles b and c are fixed (for example angle b= 73 and angle c =150), and
sides AB and CD are congruent; can angles a and b vary, or are they also fixed
Brent Michelson lui répond. |
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A quadrilateral problem |
2007-08-29 |
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James pose la question :
The sides BC and AD of a quadrilateral ABCD are parallel. X is the midpoint of AB. The area of ABCD is Y. Find the area of the triangle CXD in the terms of Y.
Harley Weston lui répond. |
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Proving a quadrilateral is a rectangle |
2007-07-14 |
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Sonja pose la question :
I was having this discussion with another teacher and we need a third opinion. When you are trying to prove a quadrilateral is a rectangle which method should you use:
- Prove the shape is a parallelogram by doing slope 4 times by stating that parallel lines have equal slopes. Then proving a right angle by stating that perpendicular lines have negative reciprocal slopes.
- Doing the slope 4 times and stating that the shape is a rectangle because opposite sides are parallel because of equal slopes and it contains a right angle because of negative reciprocal slopes.
I guess the real question is do you have to first state that the shape is a parallelogram?
Stephen La Rocque lui répond. |
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The area of a quadrilateral |
2007-06-10 |
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Lucy pose la question :
Calculate the area of the quadrilateral ABCD.
AB= 4.1cm, BC = 7.6cm, AD= 5.4 cm, CD= ?
Angle ABC = 117, Angle ADC = 62.
Give your answer correct to 3 significant figures.
Stephen La Rocque and Penny Nom lui répond. |
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More on quadrilateral shape names |
2007-05-26 |
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Don pose la question :
If North Americans call a quadrilateral with no parallel sides a trapezium, is a kite merely a special type of trapezium? Can a rhombus be a kite?
Walter Whiteley and Penny Nom lui répond. |
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A regular quadrilateral |
2007-03-13 |
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Jackie pose la question :
How can the measure of each angle of a regular quadrilateral be determined?
Haley Ess lui répond. |
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Rectangles and squares |
2007-01-31 |
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Shelby pose la question :
I am doing homework and I need to know why squares are rectangles but not all rectangles are squares?
Penny Nom lui répond. |
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A cyclic quadrilateral |
2006-11-20 |
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Namrata pose la question :
If two sides of a cyclic quadrilateral are parallel, prove that
(1) remaining two sides are equal,
(2) both diagonals are equal.
Penny Nom lui répond. |
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The name of a shape |
2006-11-11 |
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Valentina pose la question :
I have a shape of 4 sides 3 are the same length (2cm each) and the other smaller (1.5cm)
Chris Fisher lui répond. |
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The area of a quadrilateral |
2006-10-31 |
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Georgina pose la question :
I would really like to know and be shown how to figure out the area of a quadrilateral. I already know that it is side x matching height but i need to be shown what to do. Could you please help?
Penny Nom lui répond. |
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A problem involving a quadrilateral |
2006-10-13 |
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Jeff pose la question :
In the quadrilateral above, AB=AC=AD. If angle BCA = 65, then x=???
Penny Nom lui répond. |
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The area of a quadrilateral |
2006-09-14 |
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A student pose la question :
How can i find the area of a quadrilateral?
Penny Nom lui répond. |
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An irregular quadrilateral |
2006-02-04 |
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Christopher pose la question :
Is there such a shape as an irregular quadrilateral with 4 equal sides?
Penny Nom lui répond. |
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Constructing a quadrilateral |
2005-10-07 |
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Jayasri pose la question :
Can we construct a unique quadrilateral with the following information:
The lenghts of all the sides of a quadrilateral are known.
The angle between one of the sides and the X-axis is known.
Chris Fisher lui répond. |
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Area of a region on a map |
2005-04-28 |
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Balachandar pose la question :
Pl. find the attached map.
1. Can u pl. find out the total square are of WLMZ
2. Can u pl .find out the total square are of WXYZ -- { A }
3. Can u pl .find out the total square are of XLMY -- { B }
Pl .help me to find out the above.
.....
Chris Fisher and Penny Nom lui répond. |
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The area of a quadrilateral |
2005-02-27 |
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Jonathan pose la question :
I want to know how to find the area of a quadrilateral.
Penny Nom lui répond. |
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Are the vetices of this quadrilateral concyclic? |
2005-01-30 |
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A student pose la question :
Show that the peints A(-2,0),B(6,6),C(-1,7) and D(-2,6) are concyclic. Also find its circum radius.
Chris Fisher lui répond. |
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The area of a quadrilateral |
2004-08-25 |
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Rich pose la question :
I would like to know how to measure the area (the formula) of a quadrilateral.
Penny Nom lui répond. |
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A quadrilateral with 0 sets of parallel sides |
2001-12-12 |
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Jess pose la question :
Ok well for quadrilaterals a parallelogram is a 4 sided figure with 2 sets of parallel sides and a trapezoid is a 4 sided figure with 1 set of parallel sides. So is there a name for a quadrilateral with 0 sets of parallel side?
Chris Fisher lui répond. |
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How can you prove a quadrilateral to be a parallelogram? |
2001-03-16 |
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Joy pose la question :
How can you prove a quadrilateral to be a parallelogram?
Walter Whiteley lui répond. |
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Area of a quadrilateral |
1999-11-19 |
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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. |
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A Kite |
1998-10-07 |
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Paul Scott pose la question :
What is the mathematical term for the kite shape?
Walter Whiteley lui répond. |
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