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Math Help - Vector's Proof Question

  1. #1
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    Vector's Proof Question

    Hello, I am new to this forum and I have a quick question about vectors:

    PQRS is a quadrilateral where A, B, C and D are the midpoints of SP, PQ, QR and RS respectively. Prove, using vector methods, that ABCD is a parallelogram.

    I was wondering if anyone could solve that and show me how they did it.
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  2. #2
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    Quote Originally Posted by SleepIsTheCousinOfDeath View Post
    Hello, I am new to this forum and I have a quick question about vectors:

    PQRS is a quadrilateral where A, B, C and D are the midpoints of SP, PQ, QR and RS respectively. Prove, using vector methods, that ABCD is a parallelogram.

    I was wondering if anyone could solve that and show me how they did it.
    See here: http://www.mathhelpforum.com/math-he...rove-9401.html
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