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 198
= OF. 2. Prove that any two successive semicircles intersect interveningradii at the same point. BOUNDED MULTIF0IL8 185 3. Prove that the centers of these semicircles are equally distantfrom 0. 4. If OC = r, find the length of Cx and the area of the rosette.(2) 3r2(2-v^)(2V3 + 7r). 5. If EF = a,… … Fig. 1646, — From Lincoln Cathedral,England. FORMS BASED ON REVERSED CURVES 201. In Fig. 165, AMD, DLC, and CKBare drawn from the middle points of AD, DC,and CB, respectively, as centers, and are tangentto eacli other at the intersections of the chordsGF and FE with the radii OD and OC.
Geometry · Decoration and ornament
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
