- Circle Theorems
- Isosceles Triangle in a Circle (page 1)
- Isosceles Triangle in a Circle (page 2)
- Simple Angle in a Semi-circle
- Angle in a semi-circle
- Angle in a semi-circle (proof)
- Simple Angle at the Centre
- Simple Angle at the Centre (Reflex Case)
- Angle at the centre (page 1)
- Angle at the centre (page 2)
- Angle at the centre (page 3)
- Angle at the centre (page 4)
- Angles in the same Segment
- Angles in the same Segment (Proof)
- Simple Cyclic Quadrilateral
- Cyclic Quadrilateral (Proof)
- Alternate Segment Theorem (page 1)
- Alternate Segment Theorem (page 2)
- Alternate Segment Theorem (proof)
- Common Tangents to a Circle
- Common Tangents to a Circle (Proof)
