The chapter Three Dimensional Geometry (3D Geometry) in UP Board Class 12 Mathematics deals with the study of points, lines, and planes in three-dimensional space. This chapter builds on the concepts of vectors and coordinate geometry to analyze spatial relationships, angles, and distances between geometric entities.
Students learn about coordinates of a point in 3D space, direction cosines and ratios, equations of lines, equations of planes, and angle and distance formulas. The chapter emphasizes solving problems involving intersection of lines and planes, shortest distance between skew lines, and co-planarity conditions.
Understanding 3D Geometry enhances spatial visualization skills, logical reasoning, and problem-solving abilities. This chapter is vital for UP Board exams and competitive exams like JEE, as it connects vector algebra with real-world applications in physics, engineering, and geometry.