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

More About Angles

Author:Elizabeth McCollum
Topic:Angles
A point is in the interior of an angle if it is between points that lie on each side of the angle.  A point is in the exterior of an angle if it is not on the angle or in its interior. 
Image

Angle Addition Postulate

If P is in the interior of <RST, then m<RSP+m<PST=m<RST.
Image

New Resources

  • Untitled
  • MC #2
  • Forming Similar Triangles
  • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
  • רישום חופשי

Discover Resources

  • setTagXML02
  • geo tasks
  • Tangente an einen Graphen v2
  • related rates-triangle
  • ABDE is een koordenvierhoek
  • Copie de Seed Heads and Spirals

Discover Topics

  • Solids or 3D Shapes
  • Fractal Geometry
  • Quadratic Functions
  • Quadrilaterals
  • Geometry
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

© 2025 GeoGebra®