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

A Triangle's Angles

Author:Steve Kifowit
The sum of the measures of the interior angles of any triangle is 180°.

New Resources

  • Exploring GeoGebra for the First Time
  • Prism Drawn in 1-Point Perspective
  • Reflection = 180° Rotation about a Line
  • Using Experimental Probability to Estimate π - Monte Carlo Method
  • Locus Related to Descartes' Folium

Discover Resources

  • difference square
  • correctinew
  • Circle theorem: Angles on the same arc
  • Scavenger11
  • H.W.#33
  • Lines of Reflection

Discover Topics

  • Exponent
  • Set Theory
  • Optimization Problems
  • Piecewise Functions
  • Ellipse
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®