Question

If 3 vertices of a parallelogram ABCD are A (1, 2, 3), B (-1, -2, -1) and C (2, 3, 2) (taken in order), then the 4th vertex D is 

A (4, -7, 6)
B (-4, 7, 6)
C (3, 7, 6)
D (4, 7, 6)
Practice Next

Hey! Ask a query