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

Ford Circles

Author:Maurice OReilly
Topic:Arithmetic, Circle, Fractions, Sequences and Series, Tangent Line or Tangent
This (static) applet illustrates Ford Circles as outlined in Francis Bonahon's Numberphile YouTube entitled Funny Fractions and Ford Circles. See also my related applet Comparing fractions.

New Resources

  • General Polar Equation of Conics with Rotation (2)
  • 巧算長方形周界
  • AI for Math Teachers (prompt examples)
  • Perimeter of a Rectangle with Unknown Sides
  • רישום חופשי

Discover Resources

  • InputVectorChangeInGraphicsWindow
  • Sections of a Cube
  • Πασχαλινά Αυγά
  • Who needs the distance formula?
  • gabor filter
  • Vedic square 9...

Discover Topics

  • General Quadrilateral
  • LCM and GCD
  • Limits
  • Diagrams
  • Centroid or Barycenter
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®