Haswell's engineers' and mechanics' pocket-book .. (1844)
Haswell, Chas. H. (Charles Haynes), 1809-1907 · New York, Harper & brothers · leaf 56
To circumscribe a Pentagon about a given Circle—Jig. 2.Rule.—Inscribe a pentagon in the circle, defining the points s r v m n. GEOMETRY. 4.9 From the centre o, draw o r, o v, &c. ^ Through n, m, &c.,draw A B, B C, &c., perpendicular to o n, o m, and complete the figure. Note.—Any other…
Engineering · Mechanical engineering
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