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 61
AE obtained in Ex. 6is .45. 11. In connection with Ex. 5 construct the unit upon which themiddle figure is based. THIRD POSITION OF THE SECONDARY SQUARE 58. Designs containing secondary squares whose sidesare not parallel to either the diagonals or the diametersof the given squares give still… … A E B Fig, 48. — Arabic Design, Fig. 48a. — Parquet Flooring. 59. The design shown in the square ABCD in Fig. 48 may be constructedby either method indicated below. EXERCISES 1. AE = BF = CG = DH and the points are joined as indicated.Prove that (1) AFCH and EBGD ai-e congruent parallelograms;(2)…
Geometry · Decoration and ornament
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