Maths 0.0 / 5 ? MathematicsCircle theoremsGCSEAQA Created by: MattieLUFCCreated on: 19-05-20 12:28 CIRCLE THEORY 1 Angles in a semicircle always add up to 90 degrees 1 of 5 CIRCLE THEORY 2 The angles in the centre is always double the circumference 2 of 5 CIRCLE THEORY 3 Angles in the same segment are always equal 3 of 5 CIRCLE THEORY 4 Opposite angles in a cyclic quadlirateral always add up to 180 degrees 4 of 5 RULE FOR ANGLES ON A STRAIGHT LINE They always equal 180 degrees 5 of 5

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