NCERT Book Class 6 Mathematics Chapter 2 Lines and Angles

2 Lines and ng es

In this chapter, we will explore some of the most basic ideas of
geometry including points, lines, rays, line segments and angles.
These ideas form the building blocks of ‘plane geometry’, and will
help us in understanding more advanced topics in geometry such as
the construction and analysis of different shapes.

2.1 Point
Mark a dot on the paper with a sharp tip of a pencil. The sharper the
tip, the thinner will be the dot. This tiny dot will give you an idea of
a point. A point determines a precise location, but it has no length,
breadth or height. Some models for a point are given below.

The tip of a The sharpened The pointed
compass end of a pencil end of a needle

If you mark three points on a piece of paper,
you may be required to distinguish these three Z P
points. For this purpose, each of the three points
may be denoted by a single capital letter such as T
A

l