An introduction to projective geometry and its applications; an analytic and synthetic treatment (1905)
Emch, Arnold, b. 1871 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 91
Q coincide. Hence, to find the point of intersection of any line I with Q,produce I and I till they intersect at X; I represents the coinciding 78 PROJECTIVE GEOMETRY. projections of the required point of intersection, Fig. 27. If thispoint k is infinitely distant, i.e., if / \\l, then / is… … s^, s; this line is therefore the axis of affinity which exists betweenthe projections of figures in a plane P. If ^ is a point in P(traces s^, s^, then we can rabat P about s^ into iJ. During COLLIN RATION. 79 If the hori- the rabattement A describes a circle with center in ^^i A describesa…
Geometry, Projective · Geometry, Analytic
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