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

  • Which Quadrilateral is Which?
  • Steel Chair
  • Sine and Cosine on the Unit Circle
  • רישום חופשי
  • Transforming Random Variables

Discover Resources

  • PDF and CDF of Standard normal distribution
  • geometry project
  • Transforming Linear Functions- PCSS
  • ത്രികോണത്തിന്റെ അതേ പരപ്പുള്ള സമഭുജത്രികോണം 2
  • Temari Ball

Discover Topics

  • Calculus
  • Congruence
  • Rational Numbers
  • Rectangle
  • Stochastic Process or Random Process
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

© 2025 GeoGebra®