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 101
If GH — a, find the area of ORNS and of the entire starKPHRNSG etc. ^„^ ^^^ |^2 - V2) ; (2) 2a\2- V2). 10. In Fig. 77 join P and T, also {7 and F, and extend to meetAD and AB. Extend NK and LK to meet ^D and AB. Provethat (a) ^ii:=i(rP = ^i7. (i) The figure AHKE is i of a star similar to the… … A K -~-E—-L B Fig. 78.— From Celling of the InfantasTower in the Alhambra. Calvert (I),p. 341. EXERCISKS 1. Shovr hovr to construct Fig. 78.Suggestion. — The vertices of the star are determined by using thevertices of the square as centers and the half diagonal as radius. DESIGNS CONTAINING…
Geometry · Decoration and ornament
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