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Shared Vertex (Posted on 2013-09-25) Difficulty: 3 of 5

Let squares ABCD and AB'C'D' ( both labeled counter-
clockwise ) share vertex A.

Prove that the midpoints of line segments BD, B'D,
B'D', and BD' are the vertices of a square.

See The Solution Submitted by Bractals    
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  Subject Author Date
SolutionCoordinatized SolutionJer2013-09-27 10:16:15
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