Circle Theorems

GreenMaths, Ισίδωρος Γλαβάς, 2015/02/18

Investigate the circle theorems and corollaries.


  • 1. Circles and Angles 1
  • 2. Circles and Angles 2
  • 3. Circle Theorems - angles on the same arc
  • 4. Angle in a Semi-circle 1
  • 5. Angle in a Semi-circle 2
  • 6. Angle in a Semi-circle 3
  • 7. Circle theorems - Cyclic Quadrilaterals
  • 8. Circle theorems - Cyclic quadrilaterals
  • 9. Cyclic Quadrilateral 3

1.

Circles and Angles 1

Compare the angle at the centre to the angle on the circle. Move the points and become familiar with different versions of the diagram.
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