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 217
30°. 2. Prove that FE, DE, and ON ai-e concurrent. 3. Prove that OC = OE = OG = OK. 4. Complete the construction of the figure. Suggestion. — C, E, G, etc. are centers for the arcs ED, DC, FE,etc. For the details in figure KHG see § 275. 204 GOTHIC TBACERT: FORMS IN CIRCLES 5. Prove that the curved… … Fig. 183a.—Window South Transept.Notre Dame, Paris, 1 Fletcher, PI. 153. CHAPTER V GOTHIC TRACERY: POINTED FORMS 222. Classification. — Most of the figures in this and thetwo following sections are diagrams of tracery windows.English tracery windows have been divided into threeclasses: ^ (1)…
Geometry · Decoration and ornament
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