31. A parallelogram has vertices at P (2, -3), Q (2, 2), R (5, 6), and S (5, 1). Which of the below are correct for the
parallelogram PQRS? Select all that apply.
A. The parallelogram is not a rhombus because the slope
of QR = the slope of PS.
B. (slope of QS): (slope of PR) = -1
C. The parallelogram is a rhombus
because QR = RS = SP = PQ.
D. The parallelogram is not a rhombus because QP = RS.