Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 440
om four points in space not allin the same plane. SPHEEICAL POLYGO:^S 934. Def. A line on the surface of a sphere is said to beclosed if it separates a portion of the surface from the remain-ing portion. 935. Def. A closed figure on the surface of a sphere is afigure composed of a portion of the…
Geometry, Plane · Geometry, Solid
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