Coplanar

Any set of points that lie on the same plane are said to be coplanar.

In this illustration, A, B, C, and D are coplanar, as they are all on the same plane. By contrast, E is not on the same plane as the other points, so it is not coplanar with them.

Since a plane can be defined by any three points, E is still coplanar with other pairs of points. Therefore, there are seven sets of coplanar points on the graph.