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

  • Calculating Arc Length, Radius, and Central Angle
  • Odd Function Explorer
  • Rotating Custom Polygons Around an Axis
  • Squaring a Rectangle (PST Version)
  • Laundry Basket

Discover Resources

  • undefined
  • visualising Rational and Irrational numbers on Number line
  • Inscribed Angle Dance...
  • FlipSwitch Lefler final
  • Nth roots of a Complex Number

Discover Topics

  • Special Points
  • Difference and Slope
  • Combinatorics
  • Functions
  • Power Functions
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®