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 99
ollowing areas: (a) the cross nYPQZRS etc.; (6) the rhombus FTZQ; (c) the trapezoid EFQP. Ans. (a) 5^; (ft) ^,(n-3); (c) ^(n-l)(»-3). 3. If AE = EP ^- PQ = QF = FB z= BG, etc., provethat AE : EF : FB : : 1 : 1+V2:1. 4. Construct a figure toillustrate the relations given inEx. 3. (See Fig. 76a and… … Fig. 766. — Mosaic Floor Design. 6. li AB = a and AE = ^—~—^, find the area of the squareAETN, of the rhombus EXZT, and of the entire cross in Fig. 76a.^«s.(l)g(ll-6V2); (2)g(llV2-12); (3) ||(1] - 6V2). THE TWO-EIGHTHS STAR 97. The I star is formed by joining every second ver-tex of the octagon and…
Geometry · Decoration and ornament
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