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Circle Theorems
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Circle Theorems
1. The angle at the centre of a circleis twice the angle at the circumference.
2. Angles in the same segment are equal. Opposite angles add up to 180 degrees.
3. The angle in a semicircle is 90 degrees where it hits the circumference.
4. Opposite angles in a quadrilateral add up to 180 degrees
5. A tangent and radius meet at 90 degrees
6. Tangents from the same point are the same length.
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- Mind Map on Circle Theorems, created by Claudia Goodyear on 21/03/2015.
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- Claudia Goodyear
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