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 230
Fig, 194. D B -From Hanstein, PI. 32. EXERCISES 1. Prove that (1) HKL is an equilateral triangle, and (2) BE isthe perpendicular bisector of HK. 2. Prove that the arcs that form tte cusps are tangent at pointsR and S, the middle points of the lines HK and HL. 3. Prove that the circle inscribed in A…
Geometry · Decoration and ornament
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
