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 287
bstituting in the resultobtained in Ex. 2. Am. -■ Note. —This is Fig. 244. 4. If ^Q =ifcs and RN = h • — find the radius of circle O. ^ . s (iik-2h-2\ Ans. - •[ )■ 2 V 9;i: + 6A / 5. Show how the formula in Ex. 2 may be obtained from that inEx.4. 290. Figure 244 is a special case under Fig. 243.… … Fig. 244. — From Church in Hert-fordshire, England. Brandon(I), p. 28. EXERCISES 1. If D is the center of AB, prove that the points C, K, and D arecolliiiear. Suggestion. — Use the theorem, If two equal circles intersect, thecommon chord is the perpendicular bisector of the line of centers. 2. If…
Geometry · Decoration and ornament
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