Yes. You require three non-collinear points to uniquely define a plane!
A plane
Three
3 points must always be contained in one plane, as 2 make a line, it makes no difference as to where the third point is, it will exist in the same plane in the two. Aside from all three points being in a line, this is always true.
just one
Yes. You require three non-collinear points to uniquely define a plane!
A plane
Any Euclidean plane has infinitely many points.
3 or more
Three.
no
Three
1 line cause every plane contains atleast 3 or more noncollinear points
3 points must always be contained in one plane, as 2 make a line, it makes no difference as to where the third point is, it will exist in the same plane in the two. Aside from all three points being in a line, this is always true.
1, exactly 1 plane will
just one
Yes. In fact any three points that are not collinear define a plane and therefore MUST lie on a plane.