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 165
two equal sides : there-fore they are equal (b. i., p, 5);hence, the hypothenuses, or theoblique lines AB, AC, AB, are equalto each other. Again, since the distance PE is greater than PB, or itsequal PB, the oblique line AE is greater than AB, or itsequal AB (b. 1, P. 15). Cor. All the equal… … BOOK YI. 161 pendicular let fall from A would meet tliat plane, maj befound by marking upon that plane three points, B, C, Z>,equally distant from the point J., and then finding thecentre of the circle which passes through these points; thiscentre will be P, the point sought. /Scholium. The…
Geometry · Trigonometry
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