21. The vertices of a quadrilateral are A = [0, 3,5], B = (-3,-1,17], C = [4,-3,15] & D = [7, 1,3]. Prove that ABCD is a
Posted: Tue Jun 07, 2022 6:58 am
21. The vertices of a quadrilateral are A = [0, 3,5], B = (-3,-1,17], C = [4,-3,15] & D = [7, 1,3]. Prove that ABCD is a parallelogram. [5 Marks]