Elements of geometry and trigonometry. Revised and adapted to the course of mathematical instruction in the United States (1856)
Legendre, A. M. (Adrien Marie), 1752-1833, Davies, Charles, 1798-1876 · New York : A.S. Barnes · leaf 198
For, if these pyramids arc not equivalent, let S-abc bothe smaller; and sui>pose Aa to be the altitude of a ])rismv.hich, having ABC for its base, is equal to their differ-ence. Divide the nltitude AT into equal parts Ax, xjj, yz, ko^each less than Aa, and let k denote one of tlujse…
Geometry · Trigonometry
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