Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Angle in a semi-circle

Author:Nicola Trubridge
Topic:Circle

Theorem 2. Angle subtended at the circumference by a semicircle is 90°

New Resources

  • Triangle with 3 Right Angles
  • Volume by Shells Around y
  • bewijs stelling van Pythagoras
  • Exploring GeoGebra for the First Time
  • Prism Drawn in 1-Point Perspective

Discover Resources

  • LALG_U2_EA_ADGA
  • Circle1
  • ITA - Ομογραφική συμμετρική συνάρτηση ως προς την αρχή των αξόνων
  • Circle Properties (Constructivist Learning Design)

Discover Topics

  • Parabola
  • Congruence
  • Integral Calculus
  • Stochastic Process or Random Process
  • Straight Lines
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®