If we join two points, we get line segment.

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We write line segment AB as (AB)  or (BA)  

Here, points A and B are the end points of the line segment.

 

Line

A line extends in definitely in both directions.

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A line as no end point.

We write line  AB  as (AB) 

 

Ray

Ray is a line with one end-point.

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Here AB is a ray.

It can extend from point B, but point A is fixed.

We write it as (AB) 

 

Similarly,

(PQ) is a ray

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  1. Chapter 4 Class 6 Basic Geometrical Ideas
  2. Concept wise

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.