Gore, James Howard, 1856-1939 · New York, Longmans, Green, and co. · leaf 204
BOOK VIII. THE SPHERE. DEFINITIONS. 475. A Sphere is a solid bounded by a surface, all pointsof which are equally distant from a point within called thecentre. A sphere may be generated by the revolution of asemicircle about its diameter as an axis. 476. A Radius of a sphere is thedistance from its…
Geometry
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