Projective geometry for use in colleges and schools (1911)
Milne, William P. (William Proctor), 1881- · London : Macmillan · leaf 30
LINE 9 is plain tliat tlio line joining O to any point P on Iwill be parallel to the plane tt, i.e. will meet tt atinfinity. Hence, if P be the point at infinity in whichOP meets the plane tt, P will lie on the Line atInfinity in tt. Thus if ir be chosen parallel to the plane O^, theprojection of I… … Fig. 8. In Fig. 8,1 is the projection on to the plane tt of theLine at Infinity on ir. In Fig. 8, V is the projection on to the plane ir of theLine at Infinity on tt. 10 projec;tive geometry CoROt.LARY II. Tliree points A, B, C lying onthe Line at Infinity in ir pToject into three coUinearpoints A,…
Geometry, Projective
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