Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson

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

  • Linear Combination of Vectors
  • Angle Addition Postulate (V2) - Integer Solutions
  • Marion's Theorem
  • Mandelbrot 2
  • Graphing Basic and Compound Inequalities

Discover Resources

  • Differentiation - Trigonometry through first principles
  • Translating a Parabola
  • L'Hospital's Rule - Intro
  • Start, Copy an Angle
  • Compare angle

Discover Topics

  • Parabola
  • Definite Integral
  • Triangles
  • Poisson Distribution
  • Secant Line or Secant
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®