GeoGebra
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License

© 2023 GeoGebra

Dandelin's theorem

Author:
Mathieu Blossier
Topic:
Cone, Planes, Sphere
* Move points A and B to change section of the cone * Spheres are tangent to the plane and to the cone * Move point P on the conic * When the conic is an ellipse, why is MP+PH constant ?

New Resources

  • Graphing Sinusoidial Functions (All Transformations)
  • Ball Structure
  • Exploring Dilations
  • Slopes of Parallel and Perpendicular Lines - Discovery & Assessment: Quick Demo
  • Radian Angles

Discover Resources

  • Exploration2-3c
  • Untitled
  • Rectangular
  • Justin Medians
  • Horizon: Transformations of Exponential Functions

Discover Topics

  • General Quadrilateral
  • Symmetry
  • Statistics
  • Arithmetic Mean
  • Volume

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Terms of Service Privacy License
  • Facebook Twitter YouTube