geometry

Three consecutive vertices of a parallelogram ABCD are A (3, 0) ; B (5, 2) ,C (- 2, 6). Find the fourth vertex D.

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  1. CD will be parallel to AB, and of the same length.

    B-A = (2,2)

    So, D = C+(2,2) = (0,8)
    or C-(2,2) = (-4,4)

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