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Posted: **Tue Sep 07, 2021 7:06 am**

: 6 Abcd Is A Parallelogram With A 1 2 0 B 2 3 1 And C 1 1 4 A Use Vectors To Find The Coordinates Of D 4 B 1 (23.73 KiB) Viewed 89 times

6 ABCD is a parallelogram with A(-1,2,0), B(2,3,-1) and C(1,1,4). (a) Use vectors to find the coordinates of D. [4] (b) Show that the midpoints of the diagonals AC and BD coincide. [3] [7]