Circles
Circles covers terms and formulas, including central and inscribed angles, and the relationships between tangents, arcs, secants, chords and circumference. Topics include:
- Locus and Definition of a Circle and Sphere
- Central Angles and Intercepted Arcs
- Chords and a Circle's Center
- Radii to Tangents
- Tangent Segments to a Circle
- Inscribed Angles
- Angles in Semicircles and Chords to Tangents
- Cyclic Quadrilaterals and Parallel Lines in Circles
- Circumference
- Arc Length
- Secants