Dandelin's theorem

Argomento:Cono

* 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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Squares Question

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Stern_Brocot
Activity 4-1
Quádrica de equação Ax2+By2=Cz
Modul 6_Nurlaela Sari_SMPN 114

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