Copia de Dandelin's theorem in stereo

Author:Lorenzo Cubeles Blasco, Mathieu Blossier

* 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

Rolling Triangle
The Cosine Formula - Proof Without Words
apec
seo tool
רישום חופשי

Discover Resources

Properties of Quadrilaterals
Circumcenter and Incenter
Function Machine
Electric Field for a Collection of Point Charges
Can You Make a Perfect Copy?

Discover Topics

Rectangle
Correlation
Multiplication
Special Points
Plane Figures or Shapes