Question: The points P1 = (0, 0, 0), P2 = (2, 4, 2), P3 = (3, 0, 0), and P4 = (5, 4, 2) are vertices of a parallelogram.
(a) Find the displacement vectors along each of the four sides. Check that these are equal in pairs.
(b) Find the area of the parallelogram.