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8 Cards in this Set
- Front
- Back
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The angle at the centre is twice the angle at the circumference. |
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The angle in a semi-cicle is 90°. |
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Angles in the same segment are equal |
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Opposite angles in a cyclic quadrilateral add up to 180°. |
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The lengths of the two tangents from a point to a circle are equal. |
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The angle between a tangent and a radius in a circle is 90°. |
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Alternate segment theorem:The angle (α) between the tangent and the chord at the point of contact (D) is equal to the angle (β) in the alternate segment*. |
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Perpendicular from the centre bisects the chord: |
