Consider the points ,

Other · Multi-part · ISC · Mathematics · Coordinate Geometry · Three-Dimensional Geometry

Problem

Consider the points P(1,4,−1)P(1, 4, -1), Q(6,−8,7)Q(6, -8, 7), and R(−5,−2,−9)R(-5, -2, -9). Let M be the midpoint of [PQ][PQ], and N be the midpoint of [QR][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].

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