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 242
Fig. 2066. — From St BridesR. C. Church, Chicago. FORMS CONTAINING TANGENT CIRCLES 229 3. Construct the curved A GKM and HLN and prove that acircle can be inscribed in the curved hexagon XYZ etc. Suggestion. — Prove that OX = OY = OZ, etc., and that the circleand the arcs NH, GK, HL, etc., are… … Fig. 207. 251. In Fig. 207 ABC is an equilateral triangle. L, M, and IT are arbitrarypoints on the medians A£, BF and CD, respectively, so chosen that AL = BM— CN. L, M, and N are the centers and LC is the radius for the circles thatintersect at A, B, and C. EXERCISES 1. Prove that these circles…
Geometry · Decoration and ornament
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