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

British Flag Theorem

Author:John Golden
Topic:Area, Rectangle
Another great find from the Futility Closet. https://www.futilitycloset.com/2021/06/30/the-british-flag-theorem/ AE^2+DE^2=CE^2+BE^2!

New Resources

  • Vertical and Oblique Asymptote
  • Graphs of Rational Expressions
  • Slope Between 2 Points (Phase 2)
  • Sine and Cosine on the Unit Circle
  • Discriminant of y = ax² + bx + c

Discover Resources

  • Interpretacja geometryczna pochodnej
  • Level 6 Portfolio
  • Illusion of a bouncing ball
  • Centroid- Cameron Wendler 6th hour
  • optional challenge
  • illness growth models

Discover Topics

  • Integral Calculus
  • Sequences and Series
  • Trigonometric Functions
  • Cosine
  • Terms
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®