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0 votes
30.7k views
in Mathematics by (76.3k points)

Show that the four points A (4, 5,1), B(0, - 1, - 1), C(3, 9, 4) and D(- 4, 4, 4) are coplanar.

1 Answer

+1 vote
by (75.0k points)
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Best answer

Hence, points are coplanar.

Alternative Method :

If four points A, B, C, D are coplanar, then vector

By considering O : (0,0,0) as initial point

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