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

Angle in a Semi-circle 3

Author:GreenMaths
Topic:Circle, Geometry
A visual proof of why the angle in a semi-circle is 90.

New Resources

  • AI for worksheet development
  • AI for Math Teachers (prompt examples)
  • Text with alpha background color
  • z`]]
  • Parallel lines, Transversals and Segments

Discover Resources

  • GeoGebra - Hindi Interface
  • catenary and evolute
  • Refraction on a Semicircle
  • Mặt phẳng đối xứng của chóp tứ giác đều
  • Day 19 Practice 5

Discover Topics

  • Expected Value
  • Constructions
  • Parametric Curves
  • Trapezoid
  • Hypothesis Testing
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®