GyanGhar GyanGhar

Class 11 · Math · Chapter 11

Introduction to Three Dimensional Geometry

Locating a point in space takes three numbers: the 3D coordinate system with its axes, coordinate planes and eight octants, and the chapter's one big tool — the distance formula PQ=(x2−x1)2+(y2−y1)2+(z2−z1)2PQ = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2 + (z_2-z_1)^2} — used to test collinearity, classify figures and describe loci. The gateway to Class 12's 3D geometry.

6 sections · ~310 min read · Free, no login needed
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Topics in this chapter

  1. 1

    Coordinate Axes, Planes and Octants

    35 min read · Quiz included

  2. 2

    Distance Between Two Points

    45 min read · Quiz included

  3. 3

    Solved Examples

    60 min read · Quiz included

  4. 4

    JEE Corner — 3D Coordinates for JEE Main and Advanced

    55 min read · Quiz included

  5. 5

    JEE Main Pattern Practice Questions

    90 min read · Quiz included

  6. 6

    Summary and Quick Revision

    25 min read · Quiz included