To determine which points are not coplanar with P, S, and K, let's begin by plotting plane PSK. To do this, we connect the points and create a plane that goes across the diagonal of the diagram.
Looking at the graph, we can see that the point N also lies on this plane. The points that are not coplanar with P, S, and K are then any points that are not on the plane PSK. These are L, M, R, and Q.
