Copy of Dandelin's theorem

作者：Jefferson Peruzzo, Mathieu Blossier, Gabriel Neves

* 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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Shapes of constant diameter (CREATOR)
Bézierkrommen
Proj 3.1
แก้สมการพหุนามดีกรี 3
Fractal curve 3

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對數函數
Dilation
矩形
Pythagoras or Pythagorean Theorem
垂心

Copy of Dandelin's theorem

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