Books  Books 1  1 of 1 on If A, B, C are points not all on the same line, and D and E (D ^ E) are points such.... 
If A, B, C are points not all on the same line, and D and E (D ^ E) are points such that B, C, D are on a line and C, A, E are on a line, then there is a point F such that A, B, F are on a line and also D, E, F are on a line. Projective Geometry  Page 27 by Oswald Veblen, John Wesley Young  1910 Full view 
