6. A quadrilateral is drawn on a coordinate plane with vertices at W(-3,1), X(-1,5), Y(0,3), and Z(-2,-1).
Andrew wants to prove that the quadrilateral is a parallelogram. Which of the following actions could he take? Select all that apply.
A Use the slope formula on each side of the quadrilateral and show that opposite sides have the same slope.
B.
Use the midpoint formula on each diagonal of the quadrilateral and show that the diagonals have the same midpoint.
с
Use the distance formula on each side of the quadrilateral and show that opposite sides have the same length
thank