Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 36
The radius, therefore, is equal to f of a quadrant; andthis is equal to a right angle. Fig. 36. 79.— Through a given point, to draw a line parallel to agiven line. Let a, {Fig. 36,) be the given point, and b c thegiven line. Upon any point, as d, in the line, b c, with theradius, d a, describe the… … 80.— To divide a given line into any number of equal parts. Let a A, {Fig. 37,) be the given line, and 5 the number of parts. Draw a c, at any angle Xo ah ; on a c, from a, set off 5 equal parts of any length, as at 1, 2, 3, 4 and c ; join c and b ; through the points, 1, 2, 3 and 4, draw 1 e, 2/,…
Carpentry · Architecture
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