The class name ConvexSubPlane is somewhat ungainly. The name Facet might be a better name for this class. This similar to how the convex subhyperplane class in 2D is named Segment and not "ConvexSubLine".
- Shorter, more familiar name
- More consistency with the naming conventions of convex subhyperplanes in other dimensions (eg, Segment, GreatArc)
- The name "facet" does not necessarily imply that the shape is convex. However, this is the common usage.