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 ?

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רישום חופשי
Untitled
JLA Copy of Eri Chan
Nobody Likes to Be a Circle Either
Sunny Variations

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חקירת פונקציה ריבועית
Distance Maker
קעירות, משיק ומיתר
Conics on Special Paper

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Indefinite Integral
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