3.1 A point inside a circle of inversion has an inverse outside the circle. (AR / AF ) > 0
3.2 A point outside a circle of inversion has an inverse inside the circle. (AR / AF ) < 0
3.3 All the points on a circle of inversion are their own inverses. AR = AF = AR
3.4 The inverse of the center of a circle of inversion is undefined. As a point approaches the center of the circle of inversion, the inverse of the point approaches infinity.