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

Angles in a triangle add up to 180°

Author:John Tranter
Topic:Angles, Geometry
Drag the points to see how the angles change.

New Resources

  • Using Experimental Probability to Estimate π - Monte Carlo Method
  • Reflection Across 2 Parallel Lines
  • Volume by Shells Around y
  • רישום חופשי
  • Making New Year's resolutions for 2026

Discover Resources

  • spredningGitter2
  • Kikora Nye 1T Definisjon Oppgave 4
  • Eksplorasi Sifat-sifat Belah Ketupat
  • Link

Discover Topics

  • Fractions
  • Quadratic Functions
  • Special Points
  • Vectors 3D (Three-Dimensional)
  • Vectors 2D (Two-Dimensional)
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®