anonymous
  • anonymous
Please help. Prove that the diagonal of a quadrilateral bisect each other if and only if it is a parallelogram.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
I didn't read the problem properly, now after I did, I think we can prove this easily using vectors.
anonymous
  • anonymous
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anonymous
  • anonymous
Ya v need to solve t with vectors nly. Bt hw?

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anonymous
  • anonymous
Note the congruence of the triangles,and you can proceed easily.
anonymous
  • anonymous
This is a pure geometrical solution http://www.math.washington.edu/~king/coursedir/m444a00/test/ca10-16-pgramdiag.html
anonymous
  • anonymous
geometrically I can prove t. Bt this question comes under the section vectors. That's y am confused.
anonymous
  • anonymous
I am sooo tired right now :(
anonymous
  • anonymous
Ha k. Anyway thanx for trying to help me.
anonymous
  • anonymous
:)

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