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

The equation of a tangent to a circle

Author:GeoGebra Institute of MEI
Topic:Circle
Vary the radius of the circle with r and drag the point P.

New Resources

  • Pythagorean Theorem: Extension Exercises
  • Linear Equation Graphs: Thin Slice
  • Odd Function Explorer
  • seo tool
  • Function Art 3D - Flower

Discover Resources

  • Elementary Math (Sec 1 to 4) Applets
  • Mathmagics Test
  • Relation between central angle and on the alternate arc
  • Orthocentric Quartet and a Hyperbola
  • Differentiating from first principles

Discover Topics

  • Means
  • Cylinder
  • Percentages
  • Geometric Distribution
  • Translation
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®