Search
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Measure the Radius

Author:Laudia Joseph, Anthony OR 柯志明
Drag the ruler to move. Drag the red point to rotate. Use the slider to adjust the length.

Measure the Radius

Anthony Or GeoGebra Institute of Hong Kong

New Resources

  • Dividing a 3-digit number by a 1-digit number (1)
  • Variation Theory Illustration: Point-Slope Form
  • Torus
  • z`]]
  • רישום חופשי

Discover Resources

  • Diffraction Grating
  • Exploring the Chain Rule (simple with ceiling & floor)
  • Segments of Circles - Tangent and Secant
  • Adding and Subtracting Integers with Balloons and Sandbags

Discover Topics

  • Polygons
  • Exponent
  • Confidence Interval
  • Linear Regression
  • Conditional Probability
AboutPartnersHelp Centre
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2025 GeoGebra®