Assertion: sphere's surface | /r/HasProperty | two-dimensional
Facets:
Source sentences:
text: Although a sphere exists in 3-space, its surface is two-dimensional.
text: For example, a one-dimensional sphere is the surface of what is commonly called a "circle", while such a circle's interior and surface together are the two-dimensional ball.
text: Similarly, a two-dimensional sphere is the surface of the Euclidean solid known colloquially as a "sphere", while the interior and surface together are the three-dimensional ball.