EntityQ5072515· pop 5· linked from 8 articleschannel surfaceSign in to savesurface formed from spheres centered along a curveConnectionsgeometryEntityInternational Standard Book NumberEntityDavid HilbertEntitytopologyEntitysphereEntityconeEntitycurveEntitytorusEntityhelixEntitydescriptive geometryEntitysurface of revolutionEntityorthogonal projectionEntityenvelopeEntityorthonormal basisEntityregular spaceEntitysurfaceEntitygeneratrixEntityparallel curveEntityDupin cyclideEntityimplicit surfaceEntityCategoriesSurfaces