Dandelin's theorem

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* 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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Hypocycloids
Polar Coordinates Book
Sine in Cartesian and Polar Coordinates
Involute of the Circle
Untitled

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Direction of Flow - Equilibium Conditions
Fun with spline
prob 2
Writing Equations to Model Relationships Part 2: IM Alg1.2.3
Hyperbola and Constant Difference

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