# Circle theorems

- Created by: cninamatos
- Created on: 09-06-16 04:11

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- Circle theorems
- Bowtie rule
- Angles in the same segment are equal

- Center angle
- Angle at center is twice angle at circumference

- Angle in a semi circle
- Angle in a semi circle is always 90° (angle subtended to the diameter is always a right angle)

- Tangents
- The angle where a tangent meets a radius is always 90°
- Two tangents drawn from the same point are equal in length
- Forms an isoceles triangle

- Alternate segment
- Angles that form a z shape are equal

- Bowtie rule

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