The chapter “Introduction to Three Dimensional Geometry” in NCERT Class 11 Maths explores the study of points, lines, and planes in three-dimensional space. Students learn how to represent points using coordinates (x, y, z) and understand the distance between two points, section formula, and midpoint formula in 3D space.
Key topics include direction ratios, direction cosines, and equations of a line and a plane in three dimensions. The chapter also discusses angle between two lines, angle between a line and a plane, and shortest distance between points and planes, helping students solve geometrical problems effectively.
With solved examples, step-by-step explanations, and exercises, students develop strong visualization, analytical, and problem-solving skills.
This chapter is crucial for Class 11 exams, JEE, NEET, and other competitive tests, forming the foundation for higher-level 3D geometry concepts.
