MATHEMATICS · Multi-part · CBSE · Mathematics · Introduction to Three-Dimensional Geometry · Introduction to Three-Dimensional Geometry
Problem
Consider the points P(1,4,−1), Q(6,−8,7), and R(−5,−2,−9). Let M be the midpoint of [PQ], and N be the midpoint of [QR].
(1) <b>a</b> Find the coordinates of M and N.
(2) <b>b</b> Show that [MN] is half the length of [PR] .