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 74
f (2 - v^); (3) | V2, DMSIGNS CONTAINING STABS, ROSETTES, CROSSES 61 4. Construct the pattern shown in the figure. 5. Prove that (1) the points KFK are collinear; (2) KFK andV W are parallel; (3) E WUTF etc. is a regular octagon. 6. Compare the area of EWUTF etc. with the area of EKFLGetc. Ans.… … EXERCISES 1. Prove that (a) KL ^NP = PQ, etc.; (i) EL = NF= FQ, etc.; (c) BL = BN= CQ, etc.; (d) LM = MN = QR, etc.; (e) BK is the perpendicularbisector of EM; (/) EK = EX; (^g) DM = EX and EM = XB. 2. Prove that the figures ELKJ and NFQP are congruent; alsofigures BNML and CSRQ. Prove that A ELK…
Geometry · Decoration and ornament
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