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 21
I N \ I » Fig. 86. Tiled Flooring. Scale f in. = I ft. TILE DESIGNS 11. Irregular octagons. — in Fig. 9 ABCD represents a six-inch square. Each side ^is divided into four equal parts and the pointsjoined to form the octagon KIMS, etc. … A S E K B Fig. 9. For applications see Fig. S6. EXERCISES 1. Find the ratio of KL to LM and of GE to XY. Ans. — and . 2 4 2. Prove that X F is the perpendicular bisector of MN. 3. Find the area of the octagon. Ans. 311 sq. in. 4. If similar octagons were formed from squares EFGH andBFO, -what would…
Geometry · Decoration and ornament
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