In this book, S. L. Loney tried to present elements of Coordinate Geometry in a manner suitable for beginners. This book deals with Cartesian and Polar Coordinates. The Straight Line and Circles are described more fully than the other portions of the subjects, since it is generally in the elementary conception that beginners find more difficulties. This book has been written in clear, concise, and simplified language so that beginners can understand it with minimal assistance. The information presented in this book will undoubtedly assist junior students in learning and comprehending the fundamental concepts of Coordinate Geometry.