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Mathematics, 28.07.2019 02:30 harleyandpope90

Which of the following is a valid reason why the quadrilateral shown below is a parallelogram? a. both pairs of opposite sides are parallel. b. all pairs of consecutive angles are complementary. c. both pairs of opposite angles are congruent. d. all pairs of consecutive angles are supplementary.

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Which of the following is a valid reason why the quadrilateral shown below is a parallelogram? a. b...
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