Babbit, Arthur B · New York, H. Holt and company · leaf 186
sectionsare the edges of the polyhedron. Polyhedrons are classified according to the shapeand relation of their faces. Prisms A prism is a polyhedronof which two opposite par-allel faces, called hase^, areequal and parallel poly-gons, and the other faces,called lateral faces J are par-allelograms.… … A right prism is one whose lateral edges are per-pendicular to the bases. See Fig. 89. A regular prism is aright prism whose basesare regular polygons. An oblique prism is onewhose lateral edges arenot perpendicular to thebases. See Fig. 90. A truncated prism is thepart remaining betweenthe base…
Mechanical drawing
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