Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Circle Theorems
    1. Angle at the centre
    2. Angles in the same segment (animated)
    3. Cyclic quadrilateral
    4. Tangents to circle
    5. Radius and chord
    6. Alternate Segment Theorem

Circle Theorems

Author:Jonathan Longstaffe
Topic:Circle
The circle theorems

  • Angle at the centre

  • Angles in the same segment (animated)

  • Cyclic quadrilateral

  • Tangents to circle

  • Radius and chord

  • Alternate Segment Theorem

Next
Angle at the centre

New Resources

  • Perimeter of Rectangle
  • Superellipse
  • Regular Polygons and Equivalent Triangles
  • Slope Between 2 Points (Phase 2)
  • Rectangle Construction Template (V2)

Discover Resources

  • Triangle Area
  • tacelli_1.09 unmessupable
  • special
  • Kikora Trapes
  • Day 3 - Circles

Discover Topics

  • Optimization Problems
  • Centroid or Barycenter
  • Probability
  • Linear Regression
  • Parabola
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®