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. 1. Which of the following is TRUE? a. A quadrilateral is not a parallelogram. b. A quadrilateral is not a parallelogram if no sides are parallel. C. c. A quadrilateral is a parallelogram if the diagonals do not bisect each other d. A quadrilateral is a parallelogram if both pairs of opposite angles are congruent.​

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Medunno13

Answer: B, D

Step-by-step explanation:

A parallelogram is a quadrilateral with 2 pairs of parallel sides, so if there are no parallel sides, it can't be a paralellogram.

D is true by the definition of a parallelogram.

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