ELLIPSES IN CONES
Ellipses in cones draw
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The plane section of a cone through a plane that cuts the axis of the cone is an ellipse. The foci of the cone are therefore tangential to the two spheres that, as they are tangential to the plane, are also tangential to the conoidal surface.

  Question What special ellipses are the section of a cone?
  Answer  Solution

Circular sectors & cones

Index

Parabolas & hyperbolas in a cone


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