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Trapezoid Proof (Posted on 2008-04-17) Difficulty: 3 of 5
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.

No Solution Yet Submitted by Brian Smith    
Rating: 2.5000 (2 votes)

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re: Solution | Comment 2 of 4 |
(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

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