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

Triangle Paradox (Missing square puzzle)

Author:Staci Alleca, Michael Borcherds, Stefan Lizelfelner
Topic:Area, Square
The two shapes have the same area. So where did the black square come from then?

New Resources

  • Right Triangle Trig Ratios: sin, cos, tan
  • Angle Bisector: Quick Warm Up Questions
  • Identify Opposite, Adjacent, Hypotenuse
  • How to Draw a Cube in 2D
  • Proving Triangles Similar by Dilation

Discover Resources

  • Slope-Intercept Form
  • rectangle
  • Graphs of Functions - Quadratic, Cubic, Reciprocal, Root
  • Centers of triangle
  • Poorly Drawn Quadrilaterals

Discover Topics

  • Step Functions
  • Power Functions
  • Quadrilaterals
  • Definite Integral
  • Trigonometric Functions
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®