Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson
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

  • Deciding How New Information Affects Probability
  • Isosceles Right Triangle
  • GeoGebra 3D Modeling Workshop (March 8 2024)
  • Laundry Basket
  • Segment Addition Postulate (Mild Questions)

Discover Resources

  • Level 3 cosine transformations (extension)
  • Blame it on Euler
  • m12_grafik1 eksponen_goodman_smak santo paulus jember
  • A.2.17.2 What's the Deal?
  • Area of a Triangle (V3)

Discover Topics

  • Quadratic Equations
  • Incircle or Inscribed Circle
  • Frequency Distribution
  • Stochastic Process or Random Process
  • Combinatorics
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®