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

The Sum of Angles of a Polygon

Author:Mikko Rahikka
Topic:Angles
One way to prove that the Sum of Angles of a polygon equals n*180° - 360°.

New Resources

  • bewijs stelling van Pythagoras
  • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
  • Model sferyczny - sześcian-ośmiościan
  • Random Polar Curve (3)
  • ¿Quién llegará más lejos en el mundial?

Discover Resources

  • Lines from the focus of an ellipse
  • Trig Review
  • AL Pure Quadratic Inequalities
  • Geometrija
  • of Урок 18

Discover Topics

  • Conditional Probability
  • Cosine
  • Rotation
  • Tangent Function
  • Square
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®