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 34
VWXYHOE is a regular octagon. 9. Prove that UFOE and WXYG are congruent rhombuses. 10. Prove that corresponding diagonals as EK and GZ are parallel. 11. Prove that points Z, F, and Z are coUinear. 12. Construct Fig. 24a by drawing four sets of parallel lines anderasing those parts which are not… … Fig. 25. Fig. 25a. — Linoleum Pattern. 30. In Fig. 35 the octagons are regular, and the small quadrilaterals aresquares. EXERCISES 1. Find the ratio ^ = ?^^ AB AB Ans. 2-^2 22 TILE DESIGNS 2. Construct a diagram for Fig. 25a by drawing four sets of par.allel lines and erasing those parts of each…
Geometry · Decoration and ornament
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