Haswell, Charles Haynes, 1809- [from old catalog] · New York, Harper & brothers · leaf 171
To Describe a Pentagon upon a Griven Line—Fig. 4.(4.) C Draw B m perpendicular to A B, and equal to one halfof it; extend A m until m n is equal to B m. … From A and B, with the radius B n, describe arcs cut-ting each other in o; then from o, with the radius* o B,describe the circle AGB, and the line A B is equal toone side of the pentagon upon the circle described. To Describe an Octagon upon a Griven Line A. 33— Fig. G. From the points A B erect…
Engineering · Mechanical engineering
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