Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 192
The elimina-tion of z gives y-(3 = l{x-a), the equation of the pro-jection of the line in theXF-plane. Two points, (x, y, z), {x, y, z),determine a straight linem space. The projectionof the line through thepoints {x\ y, z), (x, y, z) on the ZX-plane is determined bythe projections (a;, z), (x, z)… … Fm. 159. ^-(z-z), y-y = -(z-z). A straight line is also determined by one point and the direc-tion of the line. Let {x, y, z) be one point of the line, «, /3, y N 178 ANALYTIC GEOMETRY the angles which the line makes with the axes X, Y, Z respec-tively. Let {x, y, z) be any pointof the line, d its…
Geometry, Analytic
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