Your friend​ says, "If a quadrilateral has a pair of opposite sides that are congruent and a pair of opposite sides that are​ parallel, then it is a​ parallelogram." What is your​ friend's error? Explain.

Choose the correct answer below.

A quadrilateral is a parallelogram if the pair of longer sides congruent and the pair of shorter sides parallel.

A quadrilateral is a parallelogram if one pair of opposite sides are congruent and parallel.
A quadrilateral is a parallelogram if one pair of opposite sides is congruent.

A quadrilateral is a parallelogram if one pair of opposite sides is parallel.



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