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 136
Fig. 113. … Fig. Ii3a. — Counter Railing Design. 138. In Fig. 113 A ABC and BDC are equilateral. E, F, G, H, etc., arethe middle points of the sides AB, BC, AC, BD, etc. The semicircles whosecenters are E, F, G, H, etc. are drawn with equal radii. 124 MISCELLANEOUS INDUSTRIES EXERCISES 1. li KE = i AE and AB =…
Geometry · Decoration and ornament
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