= arc AB ; arc CD. Note. The Proposition is demonstrated of equal cir-cles and not of the same circle, rather from the con-venient figure which is thus obtained. It is manifestlytrue of the same circle, and indeed it is with the samecircle that the Proposition is usually associated. That the arc is… … Construct the equal is BAC, EDF. .Join BC, EF.Tlicu since the is at C and F are equal, the ds CAB,FDE are equiangular, aud AC • DF-AB : DE = >w : n. Similarly, if AG, DH make ecpial ^s with AB^ DErespectively, then AG:DH = /h: w. And in general any choids drawn fnmi A and D, ISO Geometry. making…
Geometry · Geometry, Plane
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