Two opposite sides of a quadrilateral are the same length. The diagonals of the quadrilateral are also the same length. Prove the quadrilateral is a trapezoid.

(In reply to Solution by Bractals)

This is exactly how I proved it... SSS to prove symmetry and then two angles that add up to 180 degrees proves parallel lines

Posted by Gamer on 2008-04-17 16:09:34