Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 37
m 0, with C D asradius, describe the cir-cle required. When the number ofsides is odd, find the cen-tre C (Fig. 72) as in lastproblem, and, with C Das radius, describe thecircle. For the constructionof the regular polygonsFig. 73 will be founduseful. Divide the interiorcircle into the numberof… … FlG CONSTRUCTION OF GEOMETRICAL PROBLEMS. 21 terior circle. The chords of the arcs intersected correspond to the sides of thedifferent polygons. The figure gives the polygons such as are usually found in practice, but asimilar figure can be constructed increasing the number of sides as far as maybe…
Mechanical drawing
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