Aldis, W. Steadman (William Steadman), 1839-1928 · Cambridge [Eng.] Deighton, Bell, and co.; London, G. Bell and sons · leaf 13
edin the ojtposite. The positive directions for the three axes are usuallytaken to be those represented in the figure by Ox, Oy, Oz,and tlie negative directions to be Ox, Oy, Oz. It will be seen that the whole of space is divided by theco-ortlinate i)lanes into eight compartments, and the signs of… … nates of a point whose absolute distances from the co-ordinateplanes are a, y8, 7 are represented bv (a, ^, 7), [—a, /?, 7),(a, - A 7), {a, A - 7), (a, - A - t), (-«. A -7), (- a, - jB, 7),(— OL, — P, — 7), according as the point lies in the compart-ment Oxyz, Oxyz, Oxyz, Oxyz, Oxyz, Oxyz, Oxyz,…
