Projective geometry for use in colleges and schools (1911)
Milne, William P. (William Proctor), 1881- · London : Macmillan · leaf 67
Fig. 22 Let LPM be an angle. Let U and V be two points on PH^, and PK,^respectively. … Project U and V into U^ and Vl^. THE CONIC 47 Then, since P[LH^MK,] = P[lu;mvL], the anglesround Pare unaltered in niagnitude after projection,by Chap. II. Art. 18. A few examples will illustrate cases which canbe successfully attacked by the above method. Example 10. // O be a fixed point on a…
Geometry, Projective
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