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 254
41 3. If ^5 = 12 and Z)0 = 5, find the length of DM and DH. Ans. (1) 4.189 = (12 -Vei) ; (2) 3.2. 4. li AB = s and DO = 6, find the length of DM and i/0. Ans. (1) s-l Vs2 + 4 62; (2) ^V9 s^ + 4 6^ - 6 sVs^ + 4 J^.5. If DiZ^ = a and ^S = s, find the length of DO. 263. Figure 219 shows a de-sign like… … Fig. 219. — From Reims Cathedral,France, Sturgis (I), p. 267. EXERCISES 1. Construct circle 0 tangent to the arcs CB and CA. 2. Construct arches GEH and HFK on the half span with aradius f of AD, so that the arcs EH and HF are tangent to circle0 and to the line CD extended. Suggestion. — Find the…
Geometry · Decoration and ornament
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