Loney, S. L. (Sidney Luxton), 1860-1939 · London, Macmillan and co. · leaf 26
had to the signs of the coordinates, the formulawill be found to be true for allpoints. As a numerical example, letPj be the point (5, 6) and Pgbe the point (-7, -4), so thatwe have and y2= -^. ThenP^ = 31^0 + OM^ = 7 + 5 and RPt^=EM-^ + l/iPj = 4 + 6 = -2/2 + 2/1.The rest of the proof is as in the… … Yi
Coordinates · Geometry, Analytic
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