Assertion: clifford torus | /r/Synonym | a euclidean 2-torus
Facets:
value: further
type: DEGREE
Source sentences:
text: It is further known as a Euclidean 2-torus (the "2" is its topological dimension); figures drawn on it obey Euclidean geometry[clarification needed] as if it were flat, whereas the surface of a common "doughnut"-shaped torus is positively curved on the outer rim and negatively curved on the inner.