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Mathematics 9 Online
OpenStudy (anonymous):

Which of the following are necessary when proving that the opposite angles of a parallelogram are congruent? Check all that apply. A.Corresponding parts of congruent triangles are congruent. B.Angle Addition Postulate. C.Segment Addition Postulate. D.Corresponding parts of similar triangles are similar.

OpenStudy (anonymous):

pick all that apply

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