Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, Comstock · leaf 314
ectec by the perjiendicular CGwhich is produced to intersect FH at C. Then will C and D be twoof the required centers, the third center being found on HB at adistance to the right of H equal to HD. An infinite number of curves may thus be constructed ft)r the samespan and rise. 292. CUT-STONE… … Fig. 141.—Ciit-stone Elliptical Threecentered Arch. Fifif. 142,—Cut-stone Four-centereii TmlorArch. equal to BC, describe arcs intersecting at F. Draw BE and pro-duce it to meet a perpendicular to AD drawn through C; and drawCF and produce it to meet a perpendicular to AD drawn throughB. With i? as…
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