Projective geometry for use in colleges and schools (1911)
Milne, William P. (William Proctor), 1881- · London : Macmillan · leaf 23
Projec-tion O. Fio. 1. Corollary I. p is the projection of P on the plane tt. CoROLiiARY II. Any point on the line of inter-section of the planes tt and ir projects into itself This is obvious from Fig. 1, where the pointsA and A are seen tocoincide. 4. Projection of Fig-ures. If a figure be… … Fig. 2. THE STRAIGHT LINE 3 the Projection of the figure drawn on the plane irwith respect to the Vertex of Projection O. The diagram represents a characteristic figure in theHiglier Geometry of Curves projected from the planeTT on to tlie plane tt (or vice versa), O being thevertex of projection.…
Geometry, Projective
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