Introduction to Three Dimensional Geometry

What “Introduction to Three Dimensional Geometry” begins with

208 MATHEMATICS vMathematics is both the queen and the hand-maiden of all sciences – E.T. BELLv 11.1 Introduction You may recall that to locate the position of a point in a plane, we need two intersecting mutually perpendicular lines in the plane. These lines are called the coordinate axes and the two numbers are called the coordinates of the point with respect to the axes.