: Matemáticas: conoid

geometry > differential geometry > differential geometry of surfaces > ruled surface > conoid

geometry > Euclidean geometry > surface > ruled surface > conoid

topology > geometric topology > surface > ruled surface > conoid

geometry > topological space > surface > ruled surface > conoid

geometry > analytic geometry > surface > ruled surface > conoid

geometry > geometric figure > conoid

conoid

In geometry a conoid (from Greek κωνος 'cone', and -ειδης 'similar') is a ruled surface, whose rulings (lines) fulfill the additional conditions :
(1) All rulings are parallel to a plane, the directrix plane.
(2) All rulings intersect a fixed line, the axis.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Conoid)

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