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 143
, P, and G. 3. Prove that BHY.T, CLZG, etc., are congruent rhombuses. 4. Prove that JIP, XPY, GHQ, YQZ, etc., are congruent equi-lateral triangles. 5. Prove that IBGQYP, CKRZQH, XYZWUV, etc., are congru-ent regular hexagons. 6. Prove that star XPYQZR etc., is similar to the star shown inFig. 115.…
Geometry · Decoration and ornament
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