概要
Geometry of Circles
Book 4B Chapter 11-12
目次
Chapter 11 Basic Properties of Circles
- Theorem 1.1 - 1.3 (Chords of circles)
- Theorem 1.4-1.5 Distances between Chords and Centre
- Theorem 1.6 Angle at Centre Twice Angle at Circumference
- Theorem 1.9 Angles in the same segment
- Theorem 1.10-1.15 Relationships among Chords, Arcs and Angles
- Theorem 1.18 Opp Angles, Cyclic Quad
- Theorem 1.19 ext. angle, cyclic quad.
- Theorem 1.20-1.23 Tests of Concyclic Points
Chapter 12 Tangents to Circles