Search
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Triangle Sum Theorem

Author:Haley Harrison-Jones, Duane Habecker, Breck Jacobs

Question 1

What do you notice about the angles inside the triangles above?

Question 2

Make a conjecture (statement) about the interior angles of ALL triangles.

New Resources

  • WC 2018
  • Derivative and Differential - A Geometric Point of View
  • Pythagoras fractal tree: Step 2
  • ื’ื™ืœื™ื•ืŸ ืืœืงื˜ืจื•ื ื™ ืœื”ืขืœืืช ื ืชื•ื ื™ ื‘ืขื™ื” ื•ื™ืฆื™ืจืช ื’ืจืฃ ื‘ื”ืชืื
  • ืจื™ืฉื•ื ื—ื•ืคืฉื™

Discover Resources

  • Refleksi Objek Terhadap Garis Y = X
  • City_ Miss Lynch
  • STEM Application Final ss
  • Untitled
  • test blocks 2

Discover Topics

  • Trigonometry
  • Set Theory
  • Numbers
  • Terms
  • Inequalities
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

ยฉ 2025 GeoGebraยฎ