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 201
Fig. 168. — From Canopy over Portail des Libraires Cathedral, Rouen, France. Porter, Vol. II, p. 266. EXERCISES204. 1. Show how to construct Fig. 168 so that Avd, BZD,CWE, etc. shall be tangent at points A, B, C, etc. 2. Prove that the circle A YZ W can be drawn tangent to A YC,BZD, and CWE. 3. If… … Fig. 169. — Detail from the Front of Stratsburg Cathedral. Hartung, Vol. I, PI. 21. OTHER FOILED FIGURES 189 4. Construct a four-part figure like Fig. 167a. Suggestion. — In Fig. 168 omit the arcs, AYC, CWE, etc., and in-scribe circles in the four remaining ovals. Note. — A window of this design…
Geometry · Decoration and ornament
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