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

  • Pythagorean Template: Integer Legs
  • Squares Question
  • Writing and Graphing Proportional Relationships (k>0)
  • Congruent Figures
  • Congruent Sides & Angles in △s: Exploration

Discover Resources

  • Alg. ASSIGNMENT ELIAS HORTA J.
  • Glubber
  • Triangle Inequality 1
  • circumcenter
  • Coloring of edges and faces of a polyhedron(n=72) extreme distribution and its dual image.

Discover Topics

  • Square
  • Equilateral Triangles
  • Quadrilaterals
  • Cylinder
  • Conic Sections
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®