9.1 Parts of Circles
9.2 Tangent Lines
9.3 Arcs in Circles
9.4 Chords in Circles
9.5 Inscribed Angles in Circles
9.6 Inscribed Quadrilaterals in Circles
9.7 Angles On and Inside a Circle
9.8 Angles Outside a Circle
9.9 Segments from Chords
9.10 Segments from Secants
9.11 Segments from Secants and Tangents
9.12 Circles in the Coordinate Plane
