two points form a line one more point is needed to check whether it is collinear or not so atleast three points must be require to check the non collinerancy of a points
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Three
To create a plane, infinitely many. To uniquely determine a plane, just three.
There will always be a single plane through all three points.
3 non-collinear points define one plane.
Definition for collinear and non collinearPoints that lie on the same line are called collinear points. If there is no line on which all of the points lie, then they are non collinear points.