An introduction to projective geometry and its applications; an analytic and synthetic treatment (1905)
Emch, Arnold, b. 1871 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 151
on theconic corresponds one Pascal line through B^. Hence, assumingany line p through Bj^, the line EF passes through the intersectionBs of BC and p. In a similar manner the fine FA is obtainedby joining A with the point of intersection B^ of CD with p. ^ See Salmon-Fiedler, Analytische Geometrie… … Fig. 52. chosen Pascal line p. Repeating the same construction for everyline p through B^, all points of the conic are obtained. To construct the tangent at any point of the conic, say A,consider F infinitely close to A. Apply the general constructionof p for ABC DBF, then the line joining B2 with…
Geometry, Projective · Geometry, Analytic
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