This textbook provides deep information about the basic concepts and fundamental theories of geometry. As a branch of mathematics, geometry studies abstract space and its properties. It deals with lengths, volumes and areas. This text elucidates new techniques and their applications in a multidisciplinary approach. It picks up individual branches and explains their need and contribution in the context of the growth of this field. Different approaches, evaluation and methodologies of geometric theory have been included in this book. Those in search of information to further their knowledge will be greatly assisted by this textbook.