Synopsis This book presents the concepts of three-dimensional geometry in a simple and lucid style within the realm of understanding of students of every genre. The matter has been arranged in such a way that even a beginner will find no difficulty in understanding and grasping the content of the book. Salient features: Presentation of the subject in simple language. Solutions of problems provided in an easily understandable manner. The diagrammatic approach adopted in the text to enhance the appreciation and understanding of concepts. Includes a large number of solved examples and exercises with answer, asked in various examinations conducted by the university and in other professional competitive examinations.