Circle Theorems Circle theorers 2.0 / 5 MathematicsAnglesGCSEAll boards Created by: tashCreated on: 11-02-10 18:04 Angles on the same arc Angles formed from two points on the circumference are equal to other angles, in the same arc, formed from those two points. 1 of 4 Tangent Angle on a Tangent is 90' 2 of 4 Angles in a semi circle Angles formed by drawing lines from the ends of the diameter of a circle to its circumference form a right angle. So c is a right angle. 3 of 4 Angle at centre is double angle at Circumference 4 of 4

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