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

  • Triangle Flexer
  • Graphical solution of ax² + bx + c = k
  • bewijs stelling van Pythagoras
  • seo tool
  • Graph of y = a(x − h)² + k

Discover Resources

  • Bicycle
  • II-gram
  • KERUCUT DALAM TABUNG
  • GARIS TEGAK LURUS
  • Untitled

Discover Topics

  • Differential Calculus
  • Random Variables
  • Logic
  • Integral Calculus
  • Vectors 3D (Three-Dimensional)
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

© 2025 GeoGebra®