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 297
INTED FORMS TYPES OF FIVE-LIGHT WINDOWS 299. Type I. Figures 253-256 furnish illustrations ofthis type, the formula for which is obtained in Ex. 5below. For other illustrations see Fig. 137a and the noteunder Ex. 4, § 300. In Fig. 253 AQ = BP = fAB.P and Q are the centers for thearcs CB and AC,… … EXERCISES1. Find the radius of circle O tangent to the arcs AC, CB, EM,and FN. if AB = s. Ans. 2. If AQ= kAB and SN = kNB, find the radius of circle O, if 3s Qk-2 AB = s and NB = 1$. Ans. 70 3. Prove A ACB and AEM similar and the points A, E, and Ccollinear. Suggestion. — See § 275, Exs. 16-19. 4.…
Geometry · Decoration and ornament
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