SOLUTION: In a quadrilateral with equal diagonals, why can't we conclude that it is a rectangle?

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Question 88169This question is from textbook Geometry:Seeing, Doing, Understanding
: In a quadrilateral with equal diagonals, why can't we conclude that it is a rectangle? This question is from textbook Geometry:Seeing, Doing, Understanding

Answer by rapaljer(4671)   (Show Source): You can put this solution on YOUR website!
I apologize for my WRONG answer here!! It was pointed out to me that a trapezoid can have equal diagonals! I completely forgot about these. Diagonals of a quadrilateral being equal does NOT imply rectangularity!! I sincerely apologize for my error!!

R^2

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