Question

Is it true or false that any three points are contained in exactly one plane?

Answer 1

I'm not sure but I think it's true

Answer 2

Please ,   Not delete my answer, because is correct.

It is false that any three points are containded in exactly one plane.

For example: if the points are aligned, these points aren´t containded in a plane, these points  are containded in a line.

O= point.

--------------O-----------O---------O---------  (these points are contaided in a line).




         o                    o            (these points are contained in a plane)
                  
                   o