5.Prove that four points A, B, C, D are on the same plane (i.e. coplanar) if and only if AD (AB × BC) = 0

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter10: Analytic Geometry
Section10.6: The Three-dimensional Coordinate System
Problem 21E
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5.Prove that four points A, B, C, D are on the same plane (i.e. coplanar) if
and only if
AD (AB × BC) = 0
Transcribed Image Text:5.Prove that four points A, B, C, D are on the same plane (i.e. coplanar) if and only if AD (AB × BC) = 0
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