Circle Theorems

Circle theorers

  • Created by: tash
  • Created on: 11-02-10 18:04

Angles on the same arc

Angles subtended 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.

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angle with a tangent (

Angle on a Tangent is 90'

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Angles in a semi circle

angle 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.

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Angle at centre is double angle at Circumference

Angle at the centre (

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