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 171
that the curved figures AEBTR and BFCST are con-gruent. 158 GOTHIC TRACMBT: FORMS IN CIRCLES 3. liAO = r, find the area of the figure AEBTR. Ans. — (23 TT - 12 ttVa - 42 V3 + 72). 4. Show how to construct Fig. 135a if the radius of the outer circleis given. Suggestion. — Points X, Y, and Z are the… … EXERCISES169. 1. Inscribe a trefoil in the equilateral triangle ABC. Suggestion. — See Fig. 136. Draw the medians AD, BF, and CE.Inscribe circles in the figures OEBD, ODCF, etc. 2. \iAB = a, find the length of GF and OT. ^ns.(l)|(V3-l); (2)^(-3_V3). VC 1Suggestion. — Since BY =2 YG, we have —— =…
Geometry · Decoration and ornament
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