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 244
is circle is tangent tolines XD and XP and to arcs BA and BC. 4. It AB = s, find the length of the radius of circle 0. Ans. About .2is. Suggestion. —In A A KG, AK^ = AO^ - K0\ If OK = x,XK = 5 Vij, and ^ K = ^ v^ + * Vs. Hence get the equation {s-xy-x^ = \{s + xy. 5. What is the per cent of error… … 232 GOTHIC TRACERY: POINTED FORMS (1) Construct a circle passing through two given points and tan-gent to a given line. See Fig. 209a. Solution. — Let ABhe the line and C and D the given points. LetCD intersect AB at P. Find the mean proportional between PCand PD. Lay off PQ and PR equal to the…
Geometry · Decoration and ornament
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