Dandelin's theorem in stereo

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

Circle Passing Through 3 Points
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Pitfalls of Disk/Washer Method
Shells
Reflection Across 2 Parallel Lines

Discover Resources

equiangular_spiral
Elf Steering
Angle at centre is twice that at circumference
Acute Triangle

Discover Topics

Sine
Polynomial Functions
Orthocenter
Trapezoid
Polygons