Haswell's engineers' and mechanics' pocket-book .. (1844)
Haswell, Chas. H. (Charles Haynes), 1809-1907 · New York, Harper & brothers · leaf 57
ints, first defining them in the circle. Upon a given Line A B, to form an Octagon—fig. 3,Rule.—On the extremities of A B, erect indefinite perpendiculars A F, B E, pro-duce A B to m and w, and bisect the angles m K e and n B/wirh A H and B C.Make A H and B C equal to A B, and draw H G, C D,…
Engineering · Mechanical engineering
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