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Posted by on Friday, January 20, 2012 at 9:00am.

True or False. A quadrilateral with these following vertices is a parallelogram.
(-4,-3),(2,-3),(4,-6),(-4,-6)

  • Math - , Friday, January 20, 2012 at 11:20am

    Calling the points ABCD,

    slope of AB = 0
    slope of CD = 0 so AB || CD

    slope of BC = -3/2
    AD is vertical
    so BD not || to AD

    no parallelogram - it is, however, a trapezoid.

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