Circle Theorems
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Last updated 6:47 PM on 10/15/24
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8 Terms
1
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Angle at circumference is half that at the centre
2
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Angles in the same segment are equal
3
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Opposite angles in a cyclic quadrilateral add to 180°
4
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The angle at the circumference of a semicircle is 90°
5
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The angle between a tangent and a radius is 90°
6
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The perpendicular from the centre of a circle to a chord bisects the chord.
7
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Alternate Segment Theorem-The angle between a tangent and a chord is equal to the angle in the alternate segment.
8
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Tangents meeting at the same point are the same length
