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 300
d the lengths and areas mentioned in Ex. 11.^ns. (1) J-; (2) -V(Jand^(2VU-3); (3) i^(4x-8V3). 13. If R is the center for the arc GK, show that RD = 2KD Tile ^KSuggestion. — A RSK and GDK are similar, therefore = —— or RK = \^„ ■ S is the mid-point of line GK. RD = RK- DK. DK14. If ^ B = s, find DR.… … Fig. i:56a.— Lincoln Calhedrai. R D s Fig. 256. 302. InFig. 256 AQ = BP = f AB. P and Q are the centers for the arcsCB and AB, respectively. AB is divided into five equal parts. Arcs EA, ER,FS, and FB are drawn from S, P, Q, and R as centers and radius | AB. 288 GOTHIC TBACEBT: POINTED FOBMS…
Geometry · Decoration and ornament
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