1 answer:
Answer:
Yes
Step-by-step explanation:
We know that because AB and CD are parallel,
- angles A and D are supplementary
- angles B and C are supplementary
As supplements of congruent angles are congruent, this means angle B is congruent to angle C.
Thus, ABCD is a parallelogram because it is a quadrilateral with 2 pairs of opposite congruent angles.
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