Gore, James Howard, 1856-1939 · New York, Longmans, Green, and co. · leaf 182
COR. 1. The lateral area of a right prism is equal tothe product of the perimeter of its base by its altitude. 417. COR. 2. The lateral area of a cylinder is equal to theperimeter of a right section of the cylinder multiplied by anelement. §418.] POLYEDKONS, CYLINDERS, AND CONES. 169 PROPOSITION… … Let ABCDE-I be an oblique prism, and ABCDE a rightsection of it. Produce AFto F, making AF -. -- AF, likewise BG = = BG,CH=CH, DI = DI, EK = EK; then will F-l be aplane (by 350) parallel to A-D, which is a right section;hence ABCDE-I will be a right prism. To prove that prism AI= prism AI. The…
Geometry
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