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 260
XERCISES 268. 1. Construct a design like that given in Fig. 223 with thespan of arches 1 and 2 twice the span of arch 5. FORMS CONTAINING TANGENT CIRCLES 247 2. Ji AB = s, find the area of the curved figures: (a) A CEF;(4) A CFB; (c) window head AEG; (d) window head liDS. Am. (a) 1^ (,r - V3) ; (6)… … Fig. 225. EXERCISES 1. If the equilateral arch GEH drawn with \ AB as radius is soconstructed that arc EH is tangent to circle 0, show how point G isdetermined. Suggestion. — See § 265. 2. Determine points G and L so that arcs EH and FK, drawn witha radius equal to ^ AB and with G and L as centers,…
Geometry · Decoration and ornament
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