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

Proof Without Words

Author:Steve Phelps
Topic:Pythagoras or Pythagorean Theorem
Drag the points. Drag the slider. What do you notice? What does this prove? How does this prove?

New Resources

  • Fractal Tétraèdre. Dilatation -1/2 centre triangles
  • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
  • Classifying Triangles
  • Mondrian's Puzzle
  • Slope Between 2 Points (Phase 2)

Discover Resources

  • Alpha-shape
  • TestR02
  • Percentage change
  • PPV and NPV in %
  • Fr-Logs and Exp Functions
  • Trigonometric circle (Trigonometrijska kruznica)

Discover Topics

  • Difference and Slope
  • Continuity
  • Addition
  • Piecewise Functions
  • Vectors 2D (Two-Dimensional)
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®