True, if two points are in a plane, then the line joining the two points lies entirely in the plane.
Discussion:
For instance, if two points A and B lie in a plane x-y, We can conclude that the line AB also lies in the plane x-y.
This therefore means that; Irrespective of whether the points are in represented in 2 or 3 dimensions, the line joining them lies within the plane in discuss.
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