Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Circle theorems
    1. Angles in a triangle
    2. Angles subtended at the centre
    3. Angles in the same segment
    4. Angles in cyclic quadrilateral
    5. Angle in a semi-circle
    6. Angle between the tangent and the radius
    7. Two tangents to a circle
    8. Alternate segment theorem

Circle theorems

Author:shane.williams
Topic:Circle

  • Angles in a triangle

  • Angles subtended at the centre

  • Angles in the same segment

  • Angles in cyclic quadrilateral

  • Angle in a semi-circle

  • Angle between the tangent and the radius

  • Two tangents to a circle

  • Alternate segment theorem

Next
Angles in a triangle

New Resources

  • Function art 3D - waiting shed (v2)
  • Congruent Figures
  • Parabolas, Lines and Nomograms
  • Function art 3D - waiting shed
  • Rovnoběžnost rovin

Discover Resources

  • חיוביות ושליליות של פונקציה קווית
  • Angle-Angle Similarity
  • กราฟของสมการเชิงเส้น
  • Успоредник
  • Tape Diagrams for Algebra (with examples)

Discover Topics

  • Geometry
  • Real Numbers
  • Continuity
  • Functions
  • Calculus
AboutPartnersHelp Centre
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®