Search

Google Classroom

GeoGebra Lesson

Home
Resources
Profile
Classroom
App Downloads

External angle of a triangle

Author:Rory Geoghegan

Topic:Angles

New Resources

Basic and Compound Inequality Illustrator
Rotating Plane Figures to Form Solids
Rotating Custom Polygons Around an Axis
Midpoint Theorem Questions: Mild
Graphing Basic and Compound Inequalities

Discover Resources

Equilateral Triangle
Circle from Triangle
Lines of Symmetry
Construction 3 of Isosceles Triangle Theorem
angles in a semi circle

Discover Topics

Unit Circle
Reflection
Cuboid
Differential Equation
Trigonometric Functions

About Partners Help Centre

Terms of Service Privacy License

Graphing Calculator Calculator Suite Math Resources

Download our apps here:

© 2026 GeoGebra®