Smith, David Eugene, 1860-1944 · Boston, New York [etc.] Ginn and Company · leaf 261
t CPd= ah. 2 dbc V4 a2c2 - (a2- &2 + c2) 250 IIIK TKACIIIXt; OF GEOMETRY This is not available at this time, however, because thePythagorean Theorem has not been proved. These two propositions arc merely special cases ofthe following general theorem, which may be given asan interesting… … pFig. 3 Fig. 4 Fig. 1 is the general case where D falls between A and B. If CPis a diameter, it reduces to the second figure given on page 249. If(P bisects Z A (11, we have Fig. 3, from which may be proved theproposition given at the foot of page 248. If D lies on BA pro-duced, we have Fig. 2. If…
Geometry
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