Question

In quadrilateral ABCD seeing line A.B. is parallel to line cd which iadditional piece of information is needed to determine the ABDC is a parallelogram

Answer 1

A.

Explanation:

In a parallelogram, if one pair of opposite sides is both parallel and congruent, then the quadrilateral is a parallelogram.

Here you already know that sides AB and CD are parallel.

If sides AB and CD are also congruent, then quadrilateral ABCD is a parallelogram.

Answer: A.