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diagonal

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The diagonals of a polygon 2016-01-29
Sofia pose la question :
What are diagonals and if you drew an octagon and drew all the diagonals how many would there be? Please explain because this is pretty confusing! Thank you!
Harley Weston lui répond.
The diagonals of a cube 2016-12-02
Peter pose la question :
when u have a cube and the inner diagonal is 41.6 how long is the outside diagonal
Penny Nom lui répond.
The diagonal of a 10 acre square 2016-04-11
Derrick pose la question :
I own 100 acre square of land. I want to run from farthest corner of property to farthest corner, Diagonally. How many miles would I have traveled?
Penny Nom lui répond.
The diagonal of a rhombus 2015-11-14
Om pose la question :
In a rhombus ABCD, angle A=60° and side AB=6 cm. Then diagonal BD is ?
Penny Nom lui répond.
The diagonals of a cube 2014-09-04
Rukshanth pose la question :
How many diagonals does a cube have?
Harley Weston lui répond.
Intersection points and diagonals 2013-09-11
Kenneth pose la question :
I was wondering, is there a relationship between the number of sides of a regular n-gon and the number of times its diagonals intersect?
Ie:
4 sides=1 intersect (center, diagonals form an 'X' )
5 sides=5 intersects (diagonals form a star)
6 sides=13 intersects
And so on.

Chris Fisher lui répond.
The diagonals of a parallelogram 2011-02-17
ginger pose la question :
Find the diagonals of parallelogram where the the side is 40 and the bottom side is 15.
Penny Nom lui répond.
Sides and diagonals of a polygon 2010-11-25
nicky pose la question :
The sum of sides of two polygons is 12 and the sum of their diagonals is 19. What kind of polygon are they?
Penny Nom lui répond.
The diagonals of a rectangle 2010-03-30
Tabatha pose la question :
The diagonals of a rectangle are 8 units long and intersect at a 60 degree angle. Find the dimensions of the rectangle.
Penny Nom lui répond.
A diagonal of an octagon 2010-03-02
cody pose la question :
I have an octagon 3ft tall by 3ft wide. What are the lengths of the diagonal lines to the vertical and horizontal lines (b and b)?
Penny Nom lui répond.
Loading a headboard in a uhaul 2010-01-20
gina pose la question :
I have a uhaul 9'10" long 4"9"wide 4'7"height I have a headboard 74 inches in height would it fit the box diagonally
Penny Nom lui répond.
Polygons, diagonals and the sum of the measures of the angles 2009-12-18
jason pose la question :
find the set of polygons in which the number of diagonals is greater than the sum of the measures of the angles
Robert Dawson lui répond.
A diagonal of a rectangle 2009-07-01
Ruben pose la question :
Please assist me with the following problem: A rectangle has a diagonal that is 3.6 feet longer than the length and 7.1 feet longer than the width. What are the dimensions of the rectangle? Thanks
Harley Weston lui répond.
The sides of a parallelogram 2009-03-17
Sami pose la question :
If ABCD is a parallelogram, prove that line AB is congruent to line CD. Clearly state your reasons and conjectures.
Penny Nom lui répond.
A walkway through a park 2009-03-07
felicia pose la question :
a diagonal walkway through a park is 18 meters long. If the park is a square, how long is one of its sides to the nearest tenth of a meter?
Penny Nom lui répond.
A shape with 10 sides 2009-03-03
Sandra pose la question :
One of my son's math questions is as follows: Suppose I have a shape with 10 sides. I choose a vertex then draw lines to the other vertices that dont share sides with the first vertex. How many vertices will that be and why?
Penny Nom lui répond.
Diagonals of a polygon 2009-02-16
Julie pose la question :
How many diagonals can be drawn from one vertex in a 12-sided polygon?
Leeanne Boehm lui répond.
A chord 2009-01-01
Deepa pose la question :
Why in a circle,a chord is called as the longest diameter? (A chord does not passes through the centre of the circle but a diameter passes through the centre)
Penny Nom lui répond.
The diagonals of an isosceles trapezoid 2008-11-14
hazel pose la question :
how to solve the diagonals of an isosceles trapezoid? what is the formula?
Harley Weston lui répond.
A square with diagonal 200 metres 2008-08-20
kelvin pose la question :
find the are and perimeter of a square with diagonal of 200 meters?
Penny Nom lui répond.
Perimeter, area and diagonals of a rectangle 2008-04-03
jenea pose la question :
I have to find the perimeter as well as the area of a rectangle when given the diagonals are 12 units long and they intersect at a 60 degree angle. how do i find both the area and perimeter; do i use the 30 60 90 triangle rule?
Stephen La Rocque and Penny Nom lui répond.
The diagonals of a hendecagon 2008-03-10
karan pose la question :
How many diagonals does a hendecagon have?
Penny Nom lui répond.
A line drawn between 2 vertices 2008-02-26
Arshad pose la question :
what is a line drawn between 2 vertices which are not next to each other called.
Penny Nom lui répond.
The diagonal of a rectangle 2008-02-21
tim pose la question :
is there a formula for finding the diagonal of a rectangle?
Penny Nom lui répond.
The diagonal of a cube 2008-02-10
Praveen pose la question :
Given a Cube's diagonal, how does one find the edge of the cube.
Stephen La Rocque lui répond.
The width of a rectangle is 4 less than twice its length. 2008-02-09
Shawn pose la question :
The width of a rectangle is 4 less than twice its length. If the area of the rectangle is 72 cm, what is the length of the diagonal
Stephen La Rocque lui répond.
Cantor's diagonal argument 2008-01-26
David pose la question :
Cantor's theory using a diagonal across a list of real numbers to proven uncoutability has always puzzled me.First in base ten, it feels like hocus pocus so I began thinking of the Boolean numbers as truer representations of place value (on,off). Secondly his list was always arbitrary or so I recollect. Therefore, I suggested using a seriesA=.10000....,B=.01000. C=.11000, etc. Any diagonal is already located among the numbers listed. My only alteration is that since the final digit is always unrepresentably either one or zero, but it must be one or the other, I make an assumption that if x= .abc...1 and y= .abc...2 the only two possibilities and I choose to count F=x+y then then the numbers are countable= Z=sumFi,where I=2+2^2+2^3...

I hope this sketch is enough description, I asked Rudy Rucker more formally but got no mathematical response, someone else gave me some tale about slippery epsilon. What do tyou think of recasting his proofs in more rigorous form? David French

Claude Tardif and Walter Whiteley lui répond.
A line between 2 vertices 2007-10-28
robert pose la question :
what do we call a line between 2 vertices which are not next to each other
Walter Whiteley lui répond.
The diagonal of a square 2007-09-23
Nasreen pose la question :
A(7,2) and C(1,4) are two vertices of a square ABCD find in the form ax+by=c the equation of the diagonal BD
Stephen La Rocque lui répond.
A rectangular sheet of paper is folded along the diagonal 2007-09-01
Amit pose la question :
A rectangular sheet of a paper with dimensions a and b is folded along its diagonal. What is the area of the overlapped region?
Harley Weston lui répond.
Diagonals on a cylinder 2007-08-10
John pose la question :
I have a cylinder that is 37.5" width X 25.25" circumference. I need to create a repeating diagonal lined pattern on the cylinder so that when it prints it joins perfectly at the circumference repeat. The design must follow these specs. Black diagonal lines need to be 1.250" max width X 1.5" max spacing between the black lines. Please Help
Stephen La Rocque lui répond.
How many diagonals does a polygon have? 2007-07-18
Edna pose la question :
how do you find the numbers of diagonals of a polygons?
Stephen La Rocque lui répond.
a^2 + b^2 = c^2 2007-03-04
Colburn pose la question :
27 feet long base 14 feet height what is the diagonal
Stephen La Rocque lui répond.
Diagonals of a rectangular grid 2007-02-21
matthew pose la question :
in a rectangular grid 3600x288 (or any large rectangle with an even number of units) how can I determine the number of vertices a diagonal line will pass through?
Stephen La Rocque and Penny Nom lui répond.
How many diagonals does a hexagon have? 2007-02-03
Marsha pose la question :
How many diagonals does a hexagon have?
Stephen La Rocque lui répond.
The diagonals of a parallelogram are mutually bisecting 2007-01-21
Greta pose la question :
I am having trouble proving that the diagonals of a parallelogram are mutually bisecting.
Penny Nom lui répond.
Can you characterize ALL polygons by the number of diagonals it has? 2006-12-17
Katie pose la question :
Can you characterize ALL polygons by the number of diagonals it has?
Penny Nom lui répond.
The diagonals of a trapezoid 2005-11-11
Chris pose la question :
Is there ever a case where the diagonals of a trapezoid bisect each other?
Walter Whiteley lui répond.
The diagonals of a hexagon 2005-08-15
Brittany pose la question :
are all of diagonals in a hexagon has same length
Penny Nom lui répond.
A line segment connecting two vertices of a polygon 2005-02-02
James pose la question :
What is a line segment (not a side) connecting two vertices of a polygon called?
Penny Nom lui répond.
Probability 2004-12-04
A parent pose la question :
Consider a 30 sided polygon. If three diagonal are selected at random, what is the PROBABILITY that they share a common endpoint?
Denis Hanson lui répond.
Diagonals in a regular dodecahedron 2004-05-15
Joshua pose la question :
A dodecahedron has twelve faces, all of which are regular pentagons. Three edges meet at each vertex of the dodecahedron. An interior diagonal is a segment connecting two vertices such that the segment is not an edge or along a face of the dodecagedron. How many interior diagonals does a regular dodecahedron have?
Penny Nom lui répond.
Diagonals in an octagon 2003-11-13
Glenn pose la question :
Question 1.
What is the probability of choosing the longest diagonal in an octagon?

Question 2.
Probability of choosing the shortest?
Andrei Volodin and Penny Nom lui répond.

Diagonals in an octagon 2003-08-04
Amanda pose la question :
How many diagonals are in an octagon??? What would be a drawing of those diagonals???
Penny Nom lui répond.
Diagonals in a polygon 2002-04-10
Murray pose la question :
If you have a regular polygon with n sides and you draw all (n-3)n/2 diagonals how many intersection will they form with each other and how many sections will they devide the polygon into.
Caude Tardif and Chris Fisher lui répond.
The diagonal 2001-03-28
Candace pose la question :
Building measuring 40 feet 3 inches by 50 feet 3inches What is the measurement of the diagonal of the building? What was method of obtainin answer?
Andrei Volodin lui répond.
order 4+ determinants 1999-12-06
Joe Kron pose la question :
Why is it never shown how to calculate the value of 4x4 (or larger size) deteminants by the diagonal multiply methods that are generally shown for 2x2 and 3x3 determinants? The method I'm talking about is called Cramer's Rule??? Is this method not extensible to order 4+ and if not why not? Anyway the method always shown for order 4+ is called "reduction by minors" which is not the answer to this question.
Walter Whiteley lui répond.
 
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