Question

Three points are said to be collinear if they lie on the same plane​

Answer 1

Just as collinear points all lie on a straight line, in the three dimensional world, when a set of points all lie on the same plane, they are called coplanar. For more see Coplanar points.

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Answer 2

Answer:

Your can't be understanding

even though i have an answer

Just as collinear points all lie on a straight line, in the three dimensional world, when a set of points all lie on the same plane, they are called coplanar. For more see Coplanar points.