3D Geometry for the JEE (Mains and Advanced) is a comprehensive book for students preparing for various engineering entrance examinations. The book comprises of chapters on direction ratios and direction cosines, plane, tetrahedron, straight line and intersection of line and plane. In addition, the book consists of several comprehension-based and multiple choice questions for thorough revision and final practice. This book is essential for students appearing for Joint Entrance Examinations and other such competitive examinations.