Conoid: Geometry, Catalan Surface, Line (geometry), Right Conoid

Plücker's Conoid: Geometry, Ruled Surface, Julius Plücker, Cylindroid

Right Conoid: Ruled Surface, Cartesian Coordinate System, Geometry, Whitney Umbrella, Hyperbolic Paraboloid

Ruled Surface: Ellipse, Directrix, Right Conoid

Catalan Surface: Geometry, Eugène Charles Catalan, Ruled Surface