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Math Help - Finding the diagonals of a isosceles trapezoid? (last question I swear)

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    Finding the diagonals of a isosceles trapezoid? (last question I swear)

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    Last edited by SarahGr; May 14th 2009 at 07:30 PM.
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    With it being an isosceles trapezoid it can be redrawn as a rectangle with the same diagonals. Try whacking a triangle off of one of the ends and sticking it on the other end in a way that makes the trapezoid a rectangle then by the Pythagorean theorem you will find the diagonal to be the sqrt(41). Should be right assuming I didn't break any rules.
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    Last edited by SarahGr; May 14th 2009 at 07:30 PM.
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    This is what I mean. The diagonal that I marked is unchanged and they are obviously going to be the same so they are both unchanged.

    Then you get a 5x4 rectangle or two right triangles with a base of 4 or 5 and then you can use the Pythagorean Theorem to solve for the hypotenuse of the triangles or diagonals of the trapezoid turned rectangle.
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    Last edited by SarahGr; May 14th 2009 at 07:30 PM.
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