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 119
ed by thesmall circle PQRS1 Ans. 62.8 % about. Remark. — Details of this figure occur in fan vaulting in ElyCathedral (Brochure Series, 1901, p. 240) and in Porapeian Mosaic(Zahn (2), Vol. II, PI. 56). 106 MISCELLANEOUS INDUSTRIESD G 119. In Fig. 95, ABCD isasguare. ThearcsHPE.EQF,etc., are drawn… … E B Fig. 95. From Fan Vaulting. Henry VII Chapel,Westminster Abbey. A. Pugin, Frontispiece, EXERCISES 1. Prove that PQRS is a square. 2. If AB = a, find the area of PQRS. Ans. ^ (3 - 2V2). 3. Construct the small circles X, Y, Z, and W. Suggestion. — To obtain point Y, make NK = BQ. Find point Yon…
Geometry · Decoration and ornament
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