Smart, Edward Howard · London : Macmillian and Co. · leaf 232
constructed uni(]uely bythe method of § 7, Chap. II., asfollows : Through aa, the point of inter-section of a pair of correspondingrays, draw any two lines v, v. Let ?/), vh be joined Iw thestraight line b and re, fc by c. Let b, c intersect, and let abe the join of this point to aa. Let P be this… … FtG. 1046. The ranges thus obtained on pand p will be homographic. Foreach range is eqiii-cross to thatformed by the correspondingdouble-dashed points on the line jj. It is most important to notethat the point pp must be denotedby two different capitals, according-as it is supposed to belong- to…
Geometry, Projective
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