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anonymous
 4 years ago
Please help.
Prove that the diagonal of a quadrilateral bisect each other if and only if it is a parallelogram.
anonymous
 4 years ago
Please help. Prove that the diagonal of a quadrilateral bisect each other if and only if it is a parallelogram.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I didn't read the problem properly, now after I did, I think we can prove this easily using vectors.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1328089175382:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Ya v need to solve t with vectors nly. Bt hw?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Note the congruence of the triangles,and you can proceed easily.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0This is a pure geometrical solution http://www.math.washington.edu/~king/coursedir/m444a00/test/ca1016pgramdiag.html

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0geometrically I can prove t. Bt this question comes under the section vectors. That's y am confused.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I am sooo tired right now :(

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Ha k. Anyway thanx for trying to help me.
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