from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The geometry of circles, angles, and figures on the surface of a sphere.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geometry The
non-Euclidean geometryon the surface of a sphere.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun (mathematics) the geometry of figures on the surface of a sphere
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