Introduction To 3-D Geometry class 11 Notes Mathematics

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CBSE Guide Introduction To 3-D Geometry class 11 Notes

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Introduction To 3-D Geometry class 11 Notes Mathematics

Download CBSE class 11th revision notes for Chapter 12 Introduction To 3-D Geometry class 11 Notes Mathematics in PDF format for free. Download revision notes for Introduction To 3-D Geometry class 11 Notes Mathematics and score high in exams. These are the Introduction To 3-D Geometry class 11 Notes Mathematics prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.

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CBSE Class 11 Mathematics
Revision Notes
Chapter-12
Introduction To 3-D Geometry class 11 Notes Mathematics


  1. Coordinates- axes, planes, points in 3D
  2. Distance between Two Points
  3. Section Formula
  • Coordinate axes: In three dimensions, the coordinate axes of a rectangular Cartesian coordinate system are three mutually perpendicular lines. The axes are called the x-axis, y-axis and z-axis.
  • Planes: The three planes determined by the pair of axes are the coordinate planes, called XY, YZ and ZX planes.

plane i.e.,

plane i.e.,

plane i.e.,

  • Octants: The three coordinate planes divide the space into eight parts known as octants.
  • Points in 3D: The coordinates of a point P in three dimensional geometry is always written in the form of triplet like (x, y, z). Here x, y  and z are the distances from the YZ, ZX and  XY
  • Distance formula between two points: Distance between two points

Section Formula: The co-ordinates of R which divides a line segment joining the points

Internally and externally in the ratio m : n respectively

Internally:         

Externally:        

Centroid: The coordinates of the centroid of the trinagle whose vertices are

 is

Introduction To 3-D Geometry class 11 Notes

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CBSE Class-11 Revision Notes and Key Points

Introduction To 3-D Geometry class 11 Notes Mathematics. CBSE quick revision note for class-11 Mathematics, Physics, Chemistry, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.

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