The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 34
The radius, therefore, is equal to | of a quadrant; andthis is equal to a right angle. Fig. 36. 79.— Through a given pointy to draw a line parallel to agiven line. Let a, i^Fig. 36,) be the given point, and b c thegiven line. Upon any point, as d^ in the line, h c, with theradius, d a, describe the… … 80.— To divide a given line into any number of equal paYts. Let a -6, {Fig. 37,) be the given line, and 5 the number of parts. Draw a c, at any angle \o ab ; 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…
Carpentry · Architecture
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