Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Circle Angle Theorems
    1. Same Arc Inscribed Angles
    2. Semi-Circle Inscribed Angle
    3. Central angle twice inscribed angle
    4. Tangent and Radius
    5. Intersecting Tangents
    6. Cyclic Quadrilateral

Circle Angle Theorems

Author:Martin McMulkin
Topic:Circle
Use these interactive sketched to explore some of the theorems

  • Same Arc Inscribed Angles

  • Semi-Circle Inscribed Angle

  • Central angle twice inscribed angle

  • Tangent and Radius

  • Intersecting Tangents

  • Cyclic Quadrilateral

Next
Same Arc Inscribed Angles

New Resources

  • Trefoil Knot
  • Model sferyczny - dwunastościan-dwudziestościan
  • Some random function
  • Slope and Road Signs
  • Viviani's Curve

Discover Resources

  • The Triangle Sum Theorem and Exterior Angle Theorem
  • ISOSCELES TRIANGLE
  • Circles 2017
  • Conde_B3_Translations
  • Construct relation of an Exterior angle of a Triangle with its interior angles

Discover Topics

  • Conic Sections
  • Differential Calculus
  • Standard Deviation
  • Plane Figures or Shapes
  • General Quadrilateral
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®