• Answers:
4. Side wall corner.
- Points N, S, L and R.
- Points M, P, V and I.
5. Plane of the floor.
6. Ceiling boundaries.
7. Three collinear points.
- Points N and S.
- Points R and L.
- Points M and I.
- Points P and V.
There are still points that are collinear. Means that they are the points that lies on the same line.
8. Five coplanar point.
- Point A, P, N, S, R and so on.
Coplanar points are points that lies on the same plane.
9. Intersection line of side wall and ceiling.
10. Intersection of plane MVP and SNP.
- Intersection Point P.
- Intersection Line NP.