al parts ; drawstraight lines from a to the points of division inb c, and also straight from g through the pointsin fb; the successive intersections of theselines, as in the case of the Greek ovolo [seefig. 7, page 209, ante], are the positions of asmany points in the contour. Fig. 14 represents… … Fig. 14. Nicholson:—join the points a b, the extremi-ties of the curve; bisect ab at the point c ; uponb c, as a diameter, describe the semicircle cdb,and on a e describe the semicircle a e c ; drawperpendiculars d o and c, from any number ofpoints in i c and c a, meeting the circum-ferences of the…
Design · Decoration and ornament · Art
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