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 251
Fig. 216. Fig. 216a,— From Cologne Cathedral, FORMS CONTAINING TANGENT CIECtES 239 260. In Fig. 216 the arch AXB and the curved square WXYZ are con-structed as shown in § 115. The arches GEH and HFE are equilateral.The arcs EH and HF are tangent to the arcs WEZ and ZFY, respectively. EXERCISES 1.…
Geometry · Decoration and ornament
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