Assertion: torus's shape | /r/HasProperty | surface
Facets:
Source sentences:
text: is thatis (mathematics) a surface generated by a closed curve (especially a circle) rotating about, but not intersecting or containing, an axis in its own plane whileis (mathematics) the standard representation of such a space in 3-dimensional euclidean space: a shape consisting of a ring with a circular cross-section: the shape of an inner tube or hollow doughnut.is thatis (mathematics) a surface generated by a closed curve (especially a circle) rotating about, but not intersecting or containing, an axis in its own plane whileis (topology) a topological space which is a product of two circles.