Three-Dimensional Coordinate Systems

The distance formula states that the distance between two points in xyz-space is the square root of the sum of the squares of the di erences between corresponding coordinates. That is, given P 1 = (x 1;y 1;z 1) and P 2 = (x 2;y 2;z 2), the distance between P 1 and P 2 is given by d(P 1;P 2) = p (x 2 x 1)2 + (y 2 y 1)2 + (z 2 z 1)2. The equation ... ................
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