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 209
, opposite p. 136, EXERCISES 1. Prove that ^ANG, NOG, GHB, etc., are congruent and equi-lateral. 2. Show how to construct the entire figure. 3. ltAO = r, find the length of GO. 4. If ^ 0 = r-, find the area of (a) The oval GO. (b) The figure GXOYHB. (c) The entire figure A GBHC etc. Ans. - V3.… … Fig. 177. — From an old Gothic Wood-carving. Brochure Series, July, 1900, p. 109. EXERCISES 214. 1. Given the circle with the radius .40; construct Fig. 177.Suggestion. — Use Fig. 176. Points A, B, C, etc. are the centers of NG, GH, HK, etc. 2. Construct the inner circle XYZ etc. tangent to the…
Geometry · Decoration and ornament
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