Smart, Edward Howard · London : Macmillian and Co. · leaf 197
Fig. 88. Then, since T is the pole of PN, TANA is a harmonic rangeand CN.CT = CA2. But PG and PT being the internal and external bisectors ofthe angle SPS, TSGS is a harmonic range (§ 7, Chap. IV.)..•. CG CT = CS2. •••§^-C-S-^(§«CW.X.)..*. CG = e2CN. 170 PROJECTIVE GEOMETRY NG(c) From the preceding…
Geometry, Projective
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