Find the midpoint of the line segment joining the following two points: (0,0,0) and
(7,-1.5,-2).
the x of the midpoint is (0+7)/2 = 3.5
the y of the midpoint is (0+(-1.5) )/2 = .....
the z of the midpoint is ......
the midpoint is (3.5, ....., ...... )