An introductory account of certain modern ideas and methods in plane analytical geometry (1894)
Scott, Charlotte Angas, b. 1858 · London, New York : Macmillan and Co. · leaf 57
)air (hj is harmonic with regard to be (Fig. 17). This is … Fii;. IT. proved by exactly the work already used, the ./;, y, z nowbeing interpreted as line coordinates ; and incidentally it is FIGUEES DETERMINED BY FOUE ELEMENTS. 43 proved that the c(|uatioii,s of four points can be ina<le tobe ±^±>/±^=0, and that the coordinates of four points canbe…
Geometry, Analytic -- Plane
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