EntityQ1191139· pop 21· linked from 155 articlespoint at infinitySign in to savelimiting point in some geometric spacesConnectionsasymptoteEntityperspectiveEntityhyperbolic geometryEntitygeometryEntityInternational Standard Book NumberEntityEuclidean geometryEntityplaneEntityfieldEntityEuclidean spaceEntitytopological spaceEntitymanifoldEntitynumber lineEntitydivision by zeroEntitycompact spaceEntityRiemann sphereEntityConvergenceEntityquadricEntityelliptic geometryEntitymidpointEntityaffine spaceEntityCategoriesHyperbolic geometryInfinityProjective geometry