Smart, Edward Howard · London : Macmillian and Co. · leaf 151
nd Yrespectively. Prove that AX = BY. 22. Prove that the locus of the centres of ellipses inscribed in thesame quadrilateral is a straight line (Newton). 23. If a triangle self-conjugate Math respect to a conic be given andone point on (or tangent to) the conic, then three other points (ortangents)… … Fig. 62a. This (Fig. 62a) is evidently true for the circle, forAZi.AZ2 = AY2.AY^, etc. It remains to prove that the relation is unaltered by pro-jection. Let small letters refer to the circle diagram and capitals, asin the figure, to its projection. 124 PROJECTIVE GEOMETRY Let V be the vertex of…
Geometry, Projective
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