Maths lesson 1 0.0 / 5 ? MathematicsTrigonometryGCSEEdexcel Created by: Jemima JamesCreated on: 07-09-17 19:57 Rule 1 Angle between radius and tangent is 90 1 of 6 Rule 2 Angle in semicircle is 90 2 of 6 Rule 3 Angle at centre is twice the angle at the circumference 3 of 6 Rule 4 Angles in the same segment are equal 4 of 6 Rule 5 Opposite angles of cyclic quadrilateral add up to 180 5 of 6 Rule 6 Lengths of the tangents from a point to the circle are equal 6 of 6
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