bn:03540615n
Noun Concept
Categories: Spheres, Conic sections, Euclidean solid geometry
EN
Dandelin spheres  Dandelin's theorem  Dandelin sphere  Dandelin theorem  Focal sphere
EN
In geometry, the Dandelin spheres are one or two spheres that are tangent both to a plane and to a cone that intersects the plane. Wikipedia
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EN
In geometry, the Dandelin spheres are one or two spheres that are tangent both to a plane and to a cone that intersects the plane. Wikipedia