Newcomb, Simon, 1835-1909 · New York, H. Holt and company · leaf 372
hile hb= ^d and dd = 5 6. Hence the opposite sides 23 and 5 6 intersect on the lineaa which joins the junction-points of the two other pairs ofopposite sides. Q. E. D. 314. Correlative of Pascals Theorem: Brian-chons Theorem. The three lines joining the opposite ver-tices of a hexagon cirmimscrihed… … Because the tangents 2 and 6 are each intersected by thefour tangents 1, 3, 4, 5, we have (a, b,c,d) = (a, b, c\ d). (§310) Consider the pencil A-a,b,c,d. We have Anh. ratio {A-a,b,c,d) = (a, b, c, d). (§ 296)
Geometry, Analytic
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