GeoGebra
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License

© 2023 GeoGebra

Exterior Angles of a Triangle

Author:
dylan.busa
Topic:
Angles
Tendopro

Exterior angles of a triangle

The diagram shows all 6 of the exterior angles of the triangle ABC. If we extend the purple line, exterior angles a1 and b2 are created. If we extend the pink line, exterior angles b1 and c2 are created. If we extend the orange line, exterior angles c1 and a2 are created.

New Resources

  • Exploring Dilations
  • Dilations Part 3: What Do You Notice?
  • GeoGebra Math Resources Preview 2023/24
  • Linear Function to Bowl or Cup
  • Radian Placement Practice

Discover Resources

  • منصفات الزوايا -تشابه
  • KreiswellenHalb07
  • Geo Stats
  • Constructions- Adolfo Ramos
  • الزاوية الخارجية في المثلث

Discover Topics

  • Differential Calculus
  • Matrices
  • Cube
  • Quadrilaterals
  • Multiplication

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Terms of Service Privacy License
  • Facebook Twitter YouTube