Search

Outline

  1. Circle Theorems
    1. Angle at the circumference versus the angle at the centre
    2. Angle at the circumference of a semi-circle
    3. Same Segment Theorem
    4. Cyclic Quadrilateral
    5. Alternate segment theorem
    6. Tangents and Radii

Circle Theorems

Author:Godfrey Almeida
Topic:Circle
Building on one circle theorem, how can you work out the majority of the others?

  • Angle at the circumference versus the angle at the centre

  • Angle at the circumference of a semi-circle

  • Same Segment Theorem

  • Cyclic Quadrilateral

  • Alternate segment theorem

  • Tangents and Radii

Next
Angle at the circumference versus the angle at the centre

New Resources

  • What Do You See? (2)
  • Function art 3D - waiting shed (v2)
  • Slope Illustrator (2)
  • apec
  • Pythagorean Template: Integer Legs

Discover Resources

  • courbe_lieu
  • grafica polinomial
  • test206
  • Fehler erster und zweiter Art
  • Math
  • Modul 10LatihanSPtDVLK_Wa Ode Eva Devianti_SMAN 2 Baubau
  • Bài tập 22a trang 55

Discover Topics

  • Surface
  • Definite Integral
  • Rhombus
  • Arithmetic Mean
  • Differential Calculus
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®