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 208
stion. —Use Fig. 174. G, H, K, etc. are the centers for UP,PQ, QR, etc. 2. If OA = r, find the area of (1) the curved triangle PHQ, and(2) the curved hexagon PQR, e.tc. Ans. (1) ^ (,r - VS) ; (2) ^ (3 V3 - ,r)- o 4: 3. In Fig. 175a prove that figures AGPQHB and BHQRKC arecongruent. OTHER FOILJED… … 213. The dotted lines in Fig. 176show ABC etc., a regular hexagon,inscribed in a circle, with alternate ver-tices joined as indicated. Fig. 176 —From Pompeian Mosaic. Zahn(21, Vol. Ill, PI. 16. Also Vaulting Plan. Handbuch der Architektur, II, 4, 2, p.71, PL, opposite p. 136, EXERCISES 1. Prove…
Geometry · Decoration and ornament
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