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 159
extending lines instars I, II, III, and IV until they intersect. 2. Prove that points A, B, and S, also C, D, and E, are collinear. 3. Prove that EF, CH, and ZO are concurrent. 4. Prove that (1) EG = GH = HK, etc. (2) Z GHK = Z KLM, = etc. (3) Star FGHKL etc., is the regular 4-pointed f star. 146… … EXERCISES 158. 1. Show how to construct Fig. 128. Suggestion, — Construct the 6-pointed /j star AKCME etc. in agiven circle. Construct the star KYMZP etc. by joining the properpoints. DESIGNS BASED ON BEGULAB POLYGONS 147 2. Prove that (a) AB = AK = KC = CM, etc. (c) Z AKC = Z CME, etc. (J) Z KCM =…
Geometry · Decoration and ornament
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