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 19
nts E, B, L, M, and K (Fig. 6a) are joined as indicated,prove that pentagon 2 is congruent to pentagon 4. 6. Prove that pentagons 1 and 3 in Fig. 6 and pentagon 2, Fig. 6a,are similar. Show that their areas obey the law for the ratios of theareas of similar polygons. 7. Show how td construct from… … p% t bmiRx Vv —M .- ^ \ ^ ^fW ^ f^WL y# S^_\^ f r 1 kl/ 5f T^ll^ ^ i R^ Fig. 7a. Tiled Flooring.Scale } in.=l ft. 9. In Fig. 7 ABCD represents fhe six-inch square, and E, F, G, and H are themiddle points of the sides. The points are joined as indicated. EXERCISES 1. Prove that the line joining iV…
Geometry · Decoration and ornament
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