the branch of geometry that deals with figures on spherical surfaces.
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- spherical angle,
- spherical astronomy,
- spherical coordinate,
- spherical coordinates,
- spherical excess,
- spherical lens,
- spherical polygon,
- spherical sailing,
- spherical triangle,
- spherical trigonometry
Origin of spherical geometry
First recorded in 1720–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the branch of geometry concerned with the properties of figures formed on the surface of a sphere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
The geometry of circles, angles, and figures on the surface of a sphere.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.