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 72
uggestion. — The bisector of an angle of a triangle divides theopposite sides into parts proportidnal to the other two sides. 22. Also find the area of the star AXBYC etc., and of A AXB. Ans. (1) a2 (2 - V2) ; (2) ^ (^2 - 1). 23. Construct a diagram for a pattern like Fig. 55a in which theoctagons…
Geometry · Decoration and ornament
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