Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Triangle Theorems
    1. Triangle Sum Theorem
    2. Right Triangles
    3. Isosceles Triangles
    4. Triangle Inequality Theorem
    5. Exterior Angle Theorem

Triangle Theorems

Author:William Rodgers
This book includes several theorems that are important for understanding triangles. Use each applet to discover rules about a triangles angles and sides.

  • Triangle Sum Theorem

  • Right Triangles

  • Isosceles Triangles

  • Triangle Inequality Theorem

  • Exterior Angle Theorem

Next
Triangle Sum Theorem

New Resources

  • z`]]
  • Classifying Triangles
  • Area of a Trapezoid
  • Celsius ↔ Fahrenheit Converter
  • bewijs stelling van Pythagoras

Discover Resources

  • Elementos secundarios de un triángulo: Simetrales.
  • My Conics
  • Coulomb force
  • Daniel Aniceto and Christopher pg.2
  • project example #39 by mr leon

Discover Topics

  • Pythagoras or Pythagorean Theorem
  • Addition
  • Geometric Distribution
  • Real Numbers
  • 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®