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

  • Circumference of a unit circle
  • Cartesian Notation of a Vector
  • Nikmati Keunggulan Di Bandar Judi Terpercaya
  • apec
  • Assistants (custom GPTs or Gemini Gems) for Math

Discover Resources

  • Math Goodies
  • textsqrt
  • Constructing Congruent Segments
  • parallelogram
  • Cone intersecting cylinder -- perpendicular axes
  • Flower 4 Teo

Discover Topics

  • Matrices
  • Parallelogram
  • Rotation
  • Scalene Triangles
  • Percentages
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®