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 215
5° prove AL = BM,etc. 6. If this design is to be executed in leaded glass, how many dif-ferent shaped patterns would be necessary ? Give proof. 7. Construct such figures dividing the circumference into five, six,or any number of equal parts and study their properties. E 220. In Fig. 182 thecircle… … Fig. 182. — From Burn, p. 20. OTHER FOILED FIGURES 203 EXERCISES 1. Construct the entire figure. 2. Prove that (a) OK =0L= OM, etc., and (6) OV = OW = OX. 3. Prove that the following arcs are equal: (a) AW — WC = BX,etc.; (J) VK = KW= WL, etc. /• / / \ / / \ / 1 .^ .yf-^^ / / / y^ —-^.3^ }\ \\…
Geometry · Decoration and ornament
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