Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 21
t quadrant, but the reasoningwill apply to any position of the two points. For example,it applies to the following diagrams, Figs. 4 and 5, withouta single change of wording. PLANE ANALYTIC GEOMETRY. P, IR Y Fig. 4. O M, Y Fig. 5. Ex. Find m and d for line joining tlie points (2, 3) and {— 1, 2). d… … Fig. 6. THE POINT. 7 Pi (xi, yi) and P.2 (xo, 72) are the two points. Draw PiRparallel to YY, PoR parallel to XX, PjS perpendicular toPoR, and P.M., parallel to YY. Then, 0M., = X2, M,P., = y.3. .-. P.,R= M,Mi = 0Mi-0Mo = xr-X2,RP^=M,Pi-MiR = yi-y.,. In the triangle PiRP,>, P^P,=zAyp,R-+RP,-2…
Geometry, Analytic
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