SOLUTION: given: FGHI is a rectangle prove: the diagonals of a rectangle have equal lengths

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Question 817145: given: FGHI is a rectangle
prove: the diagonals of a rectangle have equal lengths
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Use the Pythagorean theorem.
fg=hi
fg^2+gh^2=x
therefore
hi^2+gh^2=x

fg^2+gh^2=fh^2
hi^2+gh^2=ci^2
therefore fh=ci