Projective geometry for use in colleges and schools (1911)
Milne, William P. (William Proctor), 1881- · London : Macmillan · leaf 50
e straightlines will meet S in two points. To be met by every straight line in two points isan exclusive property of the Conic Sections. Hence S is a conic. 3. Conjugate Imaginary Points. Let the lines X^Yi, X2Y2, X3Y3 be all real. Let the conic S be also real. Then, in the above figure, it is… … Fig. 15. Conjugate Imaginary Points. The pair of imaginarypoints in which a real line cuts a real conic are called apair of conjugate imaginary points.(-2) [In Algebraic Geometry, the coordinates of one ofa pair of conjugate imaginary points can be obtainedfrom the coordinates of the other by…
Geometry, Projective
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