A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 284
— ^cD X ABC. In a similar manner volumeb-aAC = iaD x ABC. Fig. 406. ^ 734. Cor.—The volume of a prism, one of whose bases is a right section and the other an obliquesection, is the product of the right section into the arithmeticalmean of its edges. Sugs.—The volume of a&c-ABC is as shown above… … 266 EXERCISES IN GEOMETRICAL INVENTtON. 73o. The volume of any polyedion having for its bases anytwo polygons whatever, situated in parallel planes, and for lateralfaces trapezoids, is the product of -J- the distance between the basesinto the sum of the two bases plus -i times a section midway…
Geometry · Trigonometry
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