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Math Help - Value of X in parallelogram

  1. #1
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    Post Value of X in parallelogram

    What value must x have to make the quadrilateral a parallelogram?
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  2. #2
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    By definition of a parallelogram

    2x-25 = x

    x=25
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  3. #3
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    A quadrilater is a parallelogram if and only if the diagnols bisect.
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