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19 August, 20:32

Which of the following are necessary when proving that the opposite angles of a parallelogram are congruent? A. Opposite sides are perpendicular B. Opposite sides are congruent C. Angle addition postulate D. Segment Addition postulate

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  1. 19 August, 23:09
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    C and B

    Step-by-step explanation:

    The correct option is option B and C. The necessary condition to prove that the opposite angles of a parallelogram are congruent:

    C. Angle Addition Postulate.

    B. Opposite sides are congruent
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