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# NCERT Solutions for Class 11 Maths Chapter 12 - Introduction to the Three Dimensional Geometry Class 11 CBSE Board students are exposed to the world of Three Dimensional Geometry where all the basics related to the topic have been explained in depth. Here, a statement is made that three coordinates are present at a point in space.

The concepts of coordinate planes and coordinate axes in three dimensions, the length between two different points, coordinates of a point, and section formula will be walked through in this chapter. Students can practice from three different exercises that are there at the end of the chapter and a miscellaneous exercise to revise all the concepts. A brief explanation is given below.

• Coordinate Planes and Coordinate Axes in Three Dimensional Space

The rectangular coordinate system, multiple notations in coordinate planes, and how a coordinate plane is named have been explained in this topic.

• Coordinates of a Point in Space

Here, the coordinate system that exists in space is discussed along with relevant examples.

• The Length between Two Points

In this topic, measuring the distance between three points that are present in a three-dimensional coordinate system is done with the help of the distance formula.

• Section Formula

Here, the section formula that is used for three-dimensional geometry and its different cases has been elaborated. 