Coxeter- Figure 4.2B
As seen in this diagram, there is a perspectivity relating ranges on two distinct lines that features an invariant point. This helps to illustrate theorem 4.22.
Angles and Billiards
Rotation vs. Time - Sim to Sim - DV 6
Coordinate Geometry for Algebra 3 notes
Multiplying by numbers using vectors
Multiply by i vectors