3.1: 3d space, volume, angles, midpoints
3.2: 2d and 3d trig
3.3: Angle of Elevation and Depression
3.4 Circle, Arc, Area in deg
3.5 Intersection of Lines, Perpendicular Bisector
3.6 Voronoi diagrams
3.7 Radians
3.8 Unit Circle, Trig equations
3.9 Matrix Transformations
3.10 Vectors
3.11 Vector Equation of a Line
3.12 Vector applications - kinematics
3.13 Scalar and Vector Products
3.14 Graph Theory
3.15 Adjacency Matrices
3.16 Tree, Chinese Postman, Traveling Saleman
