Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 142
in two dilVercnldirections. 142 GEOMETRY. BOOK VII. POLYEDRONS. Definitions. 1. The name solid polyedron, or simple pohjedron, is givento every solid terminated by planes or plane faces; whichplanes, it is evident, will themselves be terminated by straightlines. 2. The common intersection of two… … B & à c To construct this solid, let ABCDE be any polygon ; thenif in a plane parallel to ABCDE, the lines FG, GH, HI, &c. bedrawn equal and parallel to the sides AB, BC, CD, &c. thusforming the polygon FGHIK equal to ABCDE ; if in the nextplace, the vertices of the angles in the one…
Trigonometry · Geometry
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