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 318
hic builders made its independent discoveryand use almost certain, i In the earliest buildings in Eng-land in which it is found it is used for structural purposesonly. Among these buildings is Gloucester Cathedral.^ 1 Fletcher, pp. 272 and 283 ; Fergusson, Vol. II, p. 45. 2 Bond, p. 266. ABCHE8 305… … M B I C D O E F B Fig. 273.—Common in Pullman Cars. 325. In Fig. 273 AB is the diameter of the semicircle AHB. AB isdivided into six equal parts. NM = MA = AC = BR, etc. The arcs DP,LO, KE, etc. are drawn with M, A, C, etc. as centers and ^ AB as radius. EXERCISES 1. Prove that AQC, CXD, DYO, etc.…
Geometry · Decoration and ornament
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