Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Umbra and penumbra

Author:Rory Geoghegan

New Resources

  • apec
  • Proving Triangles Similar by Dilation
  • Inversión esférica de nudos: el nudo trébol y el nudo ocho
  • Proving Triangles Similar: Multistep Transformations
  • Line Through Two Points and Slope

Discover Resources

  • Complex double label with grid
  • Vertical Angles
  • חדש
  • Golden Ratio Examples? - Nature
  • Gange på 3 måder

Discover Topics

  • Diagrams
  • Matrices
  • Vectors 2D (Two-Dimensional)
  • Variance
  • Linear Programming or Linear Optimization
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®