# Coxeter - Figure 1.6 D (right)

- Author:
- Taylor_Ikeda

- Topic:
- Geometry

A, B, C, and D are any four collinear points. R is a point outside of the line and T, Q, and W are the sections of RA, RB, and RC respectively by a line through D.
We can see that ABCD is projective to BADC through this construction.