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 123
EXERCISES 122. 1. Construct an all-over pattern of equal circles so intersect-ing that the common chords form equilateral triangles as in Fig. 98. 2. Prove that the ovals formed are congruent. 3. If AB = a, find the area of the following curved figures:(a) theo\a,\.AHBD; (J) the curved A ADBECFA.… … Fig. 99. Fig. 99o. All-over Embroidery. DESIGNS FORMED FROM ARCS OF CIRCLES 111 EXERCISES 123. 1. Construct an all-over pattern of equal circles so intersect-ing that the common chords form regular hexagons as in Fig. 99. 2. Prove that the ovals formed are equal and that the circularhexagons are…
Geometry · Decoration and ornament
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