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

  • 函數的單調性
  • Average Value of a Function
  • Billard V5.2 and V6
  • Neuberg's Theorem
  • 兩位數的位值

Discover Resources

  • Trig relationships
  • Animasi Dilatasi
  • Kopi av Visuell representasjon av sinus og cosinus i enhetssirkelen
  • page 308 #3

Discover Topics

  • Tangent Function
  • Fractions
  • Mathematics
  • Symmetry
  • Incircle or Inscribed Circle
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®