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

Triangle Sum Theorem

Author:npwilson

Interior Angles

Students will show all their work for each problem.
Find the value of the missing angle using the Triangle Sum Theorem.

New Resources

  • Regular Polygons and Equivalent Triangles
  • Area of a Trapezoid
  • Slope Between 2 Points (Phase 2)
  • Focus and Directrix
  • Regular Star Polygons

Discover Resources

  • Area Between Curves
  • การบวกจำนวนเต็มโดยใช้แผนภาพประกอบ
  • Expanding Brackets Spiders 2
  • Uniform Density 1
  • Computed Cross Ratio2

Discover Topics

  • Volume
  • Tree Diagrams
  • Intersection
  • Constructions
  • Congruence
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®