Common Core Math Vocabulary

Line - Definition with Examples

let's learn Let's learn!

What is a line? 
In geometry, a line can be defined as a straight one- dimensional figure that has no thickness and extends endlessly in both directions.
It is often described as the shortest distance between any two points.
 

Here, P and Q are points on the line.

Geometry math straight line

  Fun Facts

  • A line segment is only a part of a line. 
 

let's sing Let's sing!

Length of the table at which you dine,
Ray of the sun in the morning that shine,
The straight tubes and pipes in a pipeline,
We can find in them – straight geometry lines!
 

let's do it Let's do it!

Instead of handing out math worksheets on lines, line segments and rays, show your children how to use a ruler to draw and measure straight lines. 
 

related math vocabulary Related math vocabulary

 

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