Copy of Dandelin's theorem

Author:Zach, 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 ?

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רישום חופשי
Spherical dodecahedron/icosahedron
Here comes the sun!
Curves
bewijs stelling van Pythagoras

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Geocentrism and Heliocentrism
Forum_32514_A_ShowLabel
Tools:HHPconstructions
Olimpiada Sinaia 1.
Untitled

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Circumcircle or Circumscribed Circle
Normal Distribution
Random Experiments
Indefinite Integral
Cuboid