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Math Help - prove rhombus

  1. #1
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    prove rhombus

    The coordinates of the vertices of parallelogram RMBS are R(4, 5), M(1, 4), B(2, 1), and S(3, 0). Using the diagonals, prove that RMBS is a rhombus. Show all your work and state appropriate formulas and theorems used.

    Any help is appreciated.
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  2. #2
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    Re: prove rhombus

    Prove the diagonals are perpendicular. The product of the gradients of the diagonals should equal -1.
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