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

LinesInACircle

Author:Scott Farrar
Draw many lines from an arbitrary point B in a circle to the circumference. Rotate each by 90 degrees around its center. What do you notice?
https://twitter.com/3blue1brown/status/1016936129117937664

New Resources

  • Function art 3D - waiting shed (v2)
  • Slope Illustrator (2)
  • 繪畫垂直線
  • Graphing Basic and Compound Inequalities
  • Isosceles Right Triangle

Discover Resources

  • Dynamic model for adding two 2-digit numbers
  • Properties of Parallelograms
  • H-Slope Triangle
  • Άσκηση: Εμβαδόν (τραπέζιο, παραλληλόγραμμο, εγγεγραμμένο τρίγωνο)
  • Fourier expansion x-squared

Discover Topics

  • Power Functions
  • Diagrams
  • Arithmetic
  • Differential Equation
  • 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®