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 240
Fig. 205a From Boyton Church, England. 228 GOTHIC TBACERY: POINTED F0BM8 EXERCISES249. 1. If the circumference of a circle is divided into six equalparts at points A, B, M, N, F, and E, show that it is possible to con-struct the equilateral curved triangles OAB, OMN, and OEF, withcenters at these…
Geometry · Decoration and ornament
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