Chapter 11 • Class 11 Mathematics
Introduction to Three Dimensional Geometry
Class 11 Maths 3D Geometry — coordinate axes and planes, coordinates of a point, the distance formula and the section formula in space.
Study by topic — one focused page each
1
Coordinate Axes, Coordinate Planes and Octants
In Class 10 you fixed the position of a point in a plane with two numbers . To locate a point in space you need a third measurement how far the point …
Start this topic → 2Distance Formula in Three Dimensions
The distance between two points in space follows directly from Pythagoras theorem applied twice. If and are any two points, the distance is the length…
Start this topic → 3Section Formula in Three Dimensions
Suppose a point lies on the segment joining and and divides it in the ratio . The section formula gives the coordinates of again the plane version wit…
Start this topic →Chapter-wide tests
Online Test
10 MCQ • 20 min
IMO / Olympiad Practice
Olympiad level • 20 min
📝 Full Chapter Test (Download & Print)
35 marks • 75 min • with answer key