Question

Which characteristics will NOT prove that quadrilateral PQRS, drawn in a coordinate plane, is a parallelogram?

A.The slopes and lenghts of PQ and RS are equal.

B.The slopes of PQ and RS are equal, and the slopes of QR and SP are equal.

C.The slopes of PQ and RS are equal, and the lenghts of QR and SP are equal.

D.The lenghts of PQ and RS are equal, and the lenghts of QR and SP are equal.

Answer 1

The answer is letter C. This is because line PQ and RS does not describe a slope. Because PQ and RS are in straight horizontal lines. So it is impossible for PQ and RS to have a slope or a diagonal form.