Coxeter- Exercise 5.2.1

Author:
AndrewLyon
Topic:
Geometry
Exercise 5.2.1 What happens to the parabolic projectivity ACC projective to A1CC when PQ is the line at infinity? As opposed to the figure associated with theorem 5.21, the figure displayed here is constructed so that P can be adjusted and brought to be horizontal with point Q projecting the intersection of the line QP and AC to infinity.