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Math Help - Proving that the diagonals of a Parallelogram bisect each other

  1. #1
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    Proving that the diagonals of a Parallelogram bisect each other

    Hi, can someone show me how I would use vectors to prove that the diagonals of a parallelogram bisect each other?

    Thanks, any help would be appreciated.

    Cheers.
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  2. #2
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    Awetuouncsygg
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    Indication:

    Let M be the middle point of [AC] and N the middle point of [BD]. Try to prove that M=N. (For that a first step is writing \overrightarrow{DM} and \overrightarrow{DN}.)
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