Projective geometry for use in colleges and schools (1911)
Milne, William P. (William Proctor), 1881- · London : Macmillan · leaf 39
= ^ (since C is at infinity), = -1 .-. A[PBSC] is harmonic (Chap. I. Art. 6). 15. The Complete Quadrilateral. If p, q, r, s be fourgiven lines, and if a be the line joining pq and rs; b the linejoining pr and sq; c the line joining ps and qr ; the figureso obtained is called the Complete… … Fio. 14. 16. In solving problems by the methods of Pro-jective Geometry, the reader will probably find iteasier not to draw the projected figure from theoriginal figure, as the diflferent appearance to the e^^eis apt to lead to confusion. Having decided from theoriginal figure what line is to be…
Geometry, Projective
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