Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 361
Def. A pyramid is a polyhedron whose boundary con-sists of the portion of a pyramidal surface extending from itsvertex to a plane cutting allits elements, and the sectionformed by this plane. 748. Defs. By referringto § 727, the student maygive the definitions of base,lateral faces, and lateral…
Geometry, Plane · Geometry, Solid
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