Dandelin's theorem

Topic:Cone

* 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

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Line and Circle Practice
רישום חופשי
Prism Drawn in 2-Point Perspective
Perspective in Art

Discover Resources

Complex analysis: plane transformation
Geometry 12-3
Not Your Everyday Chord & Tangent Theorem

Discover Topics

Tangent Line or Tangent
Equations
Pythagoras or Pythagorean Theorem
Interest Calculation
Vectors 2D (Two-Dimensional)