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 259
truct the arcs DR and DS. 3. Construct a complete design like Fig. 223. Let AB be fourinches. Suggestion. — The trefoils in 1 and 2 are described from the middlepoints of the straight-line triangles as centers; those in 3 and 4 fromthe middle points of the sides of the circular triangles as…
Geometry · Decoration and ornament
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
