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 173
Fig. 138a.— From Monks Church, St. Louis. 171. In Fig. 138 the radii OA, OE, OB, etc., divide the circle into sixequal parts, and X, S, Y, T, etc., are the middle points of these radii. EXERCISES 1. Prove that XSYT etc. is a regular hexagon. 2. If X, Y, and N are the centers of RAS, SBT, and TCR,…
Geometry · Decoration and ornament
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
