In this book, the author has presented the elements of Coordinate Geometry in a manner suitable for beginners and junior students. Cartesian and Polar Coordinates only are used, and the Look forms Part I of the complete work. Part II deals with Trilinear Coordinates, Projection Reciprocation, etc. The Straight Line and a Circle have treated more fully than the other portions of the subject, since it is generally in the elementary conceptions that beginners find great difficulties. There are a large number of examples, over 1100 in all, and they are, in general, of an elementary character. The examples are especially numerous in the earlier parts of the book.