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 273
circle 0 tangent to the arcs AC, CB, AwD, 7 sand DxB, ii AB = s. Ans. —. 2. Construct circle 0. 3. li AQ = kAB = ks, find the radius of circle 0. , S 4:k-l Ans. - • 2 4 i; + 1 260 GOTHIC TRACERY: POINTED FORMS 4. Show that the radius of circle O may be derived from theformulae obtained in § 275,… … Fig. 2326. 7. In the figure obtained in Ex. 6, what per cent of the total areaabove the line AB is occupied by the included circle and semicircles? Ans. 78% about. 8. In Fig. 232 if ^ Q = J ^B = J «, find the radius of circle 0 anddraw an illustrative figure. Ans. Suggestion. — See Fig. 234. 9. If…
Geometry · Decoration and ornament
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