ivisionsA, c, H, B, draw a d, c e, &c., perpendicular toA B. On a d and b f set off any length tentimes; through these divisions draw linesparallel to a b. Divide a c and d e into twelveequal parts, each of which will he one inch.Draw the lines a 1, g 2, &c., and they willform the scale… … 2. When the point a is without the circle. From o draw o a, and bisect it in f. FromF, with F A as a radius, describe the semicircleADO, cutting the given circle in d. Thenthrough the points a and d draw A D b, and itwill be the tangent required.
Design · Decoration and ornament · Art
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