Which of the following conditions is NOT enough to conclude that a quadrilateral is a parallelogram?
A. The diagonals are perpendicular bisector of each other. B. Both pairs of opposite angles are congruent and supplementary. C. One pair of opposite sides is both congruent and parallel to each other. D. The diagonals are congruent, and the opposite sides that make up a pair are parallel to each other
Answers & Comments
C.One pair of opposite sides is both congruent and parallel to each other.
Step-by-step explanation:
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