A group of [[point]]s are coplanar if they are contained in the same [[plane]]. Similarly, lines are [[coplanar]] if the points which define them are coplanar. Non-coplanar points are points that cannot possibly be contained in one plane. In this instance, there must exist at least four points because any ''three'' points can define one plane. | A group of [[point]]s are coplanar if they are contained in the same [[plane]]. Similarly, lines are [[coplanar]] if the points which define them are coplanar. Non-coplanar points are points that cannot possibly be contained in one plane. In this instance, there must exist at least four points because any ''three'' points can define one plane. |