EntityQ896057· pop 10· linked from 30 articlesBoy's surfaceSign in to savethree-dimensional self-intersecting surface, an immersion of the real projective planeConnectionsthree-dimensional spaceEntityMöbius stripEntityYouTubeConceptgeometryEntityInternational Standard Book NumberEntityDavid HilbertEntityMercedes-BenzEntitysphereEntitydigital object identifierEntitycylinderEntitysymmetryEntityInternational Standard Serial NumberEntityperimeterEntityCartesian coordinate systemEntitysurfaceEntitytorusEntitypolar coordinate systemEntitydiskEntityEuclidean spaceEntitycongruenceEntityCategoriesCommons link from WikidataGeometric topologySurfaces