UPSKILL MATH PLUS
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Learn moreA line may be a combination of points that extends infinitely in both directions. A line is labelled as sort of a line segment with a bidirectional arrow over the label.
![output-onlinepngtools (10).png](https://resources.cdn.yaclass.in/29a898eb-73fc-4ff2-b421-2c2b01a03f44/outputonlinepngtools10.png)
The above figure shows a line \(AB\) and is represented as or .
Example:
\(100\) metres track is to illustrate the concept of the line. A track may be a line that extends infinitely in both directions without having a fixed starting and ending point.
![as.PNG](https://resources.cdn.yaclass.in/a28253c2-4f58-42bf-ba73-81a66dfe5757/asw300.png)
When three or more points lie on the same line they are called collinear points.
![output-onlinepngtools (45).png](https://resources.cdn.yaclass.in/5d6eec8d-f5ab-4de5-897f-99dc8486d650/outputonlinepngtools45w300.png)
The above figure shows the collinear points \(A\), \(B\) and \(C\). These points are collinear points because all three points lie on the same line.
Example:
Arrange the number of cups to validate the concept of the collinear points.
![output-onlinepngtools (46).png](https://resources.cdn.yaclass.in/c04a83cc-e9bf-433b-9057-8c01c1ce80d4/outputonlinepngtools46.png)
A ray is often defined as a straight line that starts from a point and extends indefinitely in one direction.
The starting point that is fixed at one end is termed as a vertex of a ray. Ray is an additionally one-dimensional entity as we will move endlessly in one direction alone.
![output-onlinepngtools (12).png](https://resources.cdn.yaclass.in/885566a7-0f0b-4cf6-9911-c099bca6bdf7/outputonlinepngtools12.png)
The above figure shows a ray \(AB\) and is represented as .
Example:
We have a battery-operated torch on one end of the road and light from the torch (called a line segment) is travelling in a straight line towards the other direction. Since we don't know the end of that light, we will say that this line segment from a fixed source may be a ray.
![output-onlinepngtools (14).png](https://resources.cdn.yaclass.in/5b853941-376c-445c-a131-c7ac36d86143/outputonlinepngtools14.png)