Selected Solutions to Chapter 4 Exercises
Difficulties strengthen the mind, as labor does the body.
—Seneca (4 B.C. – 65 A.D.)

Section 4.2 – Basic Theorems
      Exercise 4.1
      Exercise 4.2
      Exercise 4.3
      Exercise 4.4

Section 4.3 – Duality in Projective Geometry
      Exercise 4.12
      Exercise 4.13
      Exercise 4.21
      Exercise 4.22

Section 4.5 – Harmonic Sets
      Exercise 4.27

Section 4.6 – Perspectivity and Projectivity
      Exercise 4.28
      Exercise 4.31
      Exercise 4.37

Section 4.7 – Conics
      Exercise 4.51