Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson

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

  • Odd Function Explorer
  • Pythagorean Theorem: Extension Exercises
  • Midpoint Theorem (V2): Integer Solutions
  • Perpendicular Lines: Quick Exploration
  • Congruent Sides & Angles in △s: Exploration

Discover Resources

  • Limit - Product Law
  • JANET'S CLASS BOOK
  • Ontdek Negatiewe getalle
  • U13 Test
  • PLEASE Vertically Opposite Angles

Discover Topics

  • Quadratic Equations
  • Set Theory
  • Continuity
  • Ellipse
  • Similarity Transformation or Similarity
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®