A source book of problems for geometry, based upon industrial design and architectural ornament (1912)
Sykes, Mabel, 1868-, Slaught, H. E. (Herbert Ellsworth), 1861-1937, Lennes, N. J. (Nels Johann), 1874- · Boston, Allyn and Bacon · leaf 291
\,m= \, and find the radius of circle 0 for this case. Ans. ■ 14 13. Show that the formula obtained in Ex. 3 may be derived fromthat in Ex. 11. 14. Can the formula obtained in Ex. 11 be derived from that in§289, Ex. 4? 15. Show how to construct the trefoil shown in the circle inFig. 246a. 278… … D E A F GFig. 247.
Geometry · Decoration and ornament
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