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atjari Group Title

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

  • 2 years ago
  • 2 years ago

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  1. FoolForMath Group Title
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    I didn't read the problem properly, now after I did, I think we can prove this easily using vectors.

    • 2 years ago
  2. Aron_West Group Title
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    |dw:1328089175382:dw|

    • 2 years ago
  3. atjari Group Title
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    Ya v need to solve t with vectors nly. Bt hw?

    • 2 years ago
  4. Aron_West Group Title
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    Note the congruence of the triangles,and you can proceed easily.

    • 2 years ago
  5. FoolForMath Group Title
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    This is a pure geometrical solution http://www.math.washington.edu/~king/coursedir/m444a00/test/ca10-16-pgramdiag.html

    • 2 years ago
  6. atjari Group Title
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    geometrically I can prove t. Bt this question comes under the section vectors. That's y am confused.

    • 2 years ago
  7. FoolForMath Group Title
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    I am sooo tired right now :(

    • 2 years ago
  8. atjari Group Title
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    Ha k. Anyway thanx for trying to help me.

    • 2 years ago
  9. FoolForMath Group Title
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    :)

    • 2 years ago
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