Surfaces
1. Introduction to surfaces and tangent 
planes
2. Algebraic surfaces
3. Cones and cylinders
4. Quadric surfaces  – 2nd order algebraic surfaces 
5. Plane intersections and tangent planes of the 2nd 
order cone
6. Plane intersections and tangent planes of the 2nd 
order cylinder
7. Plane intersections and tangent planes of the sphere