Mathematics, 14.11.2019 22:31 ghwolf4p0m7x0

Astudent wrote the following sentences to prove that the two pairs of parallel opposite sides of parallelogram abcd are congruent: for triangles abd and cdb, alternate interior angles abd and cdb are congruent because ab and dc are parallel lines. alternate interior angles adb and cbd are congruent because ad and bc are parallel lines. db is congruent to db by the triangles abd and cdb are congruent by asa postulate. as corresponding parts of congruent triangles are congruent, ab is congruent to dc and ad is congruent to bc by cpctc. which phrase best completes the student's proof?

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Astudent wrote the following sentences to prove that the two pairs of parallel opposite sides of par...