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

Eratosthenes' Method

Author:Brendan O'Donoghue
Topic:Angles
Tick the boxes in sequence to follow the method. Move the gnomons by clicking and dragging points A and B.

New Resources

  • Open Education 2026
  • General Polar Equation of Conics with Rotation (1)
  • AI for Math Teachers (prompt examples)
  • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
  • Parallel lines, Transversals and Segments

Discover Resources

  • FolgeVonVierecken
  • Essentials2
  • Find the slope
  • geometry project
  • Гомотет хувиргалтын матриц
  • รูปคลี่พีระมิด

Discover Topics

  • Special Points
  • Prism
  • Numbers
  • Polygons
  • Incircle or Inscribed Circle
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®