Smart, Edward Howard · London : Macmillian and Co. · leaf 260
the conic at the point of coincidence. 232 PROJECTIVE GEOMETRY 111 the latter the vertex of the hexagon, which is the pointof intersection of such a pair of ultimately coincident tangentsides, becomes the point of contact of the tangent to the conicin which they coincide. i:i 5. Hence wc may apply…
Geometry, Projective
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
