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
;hence, two j;/-^5??2s of the same altitude are to each other astheir bases. For a like reason, two j^^isnis having equivalentbases are to each other as Hieir altitudes. LOOK YII. 193 riiorosiTiox xv. theorem. Two trianguhtr ■pyramids^ having equicahyit hashes and cquaJalttt/idcs, are eqiiicalcul^…
Geometry · Trigonometry
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