Curved lines and straight lines. This week’s post will teach you how to differentiate between** open and closed curves.**

The first item on our agenda is: Do you know what a *curve* is? **A curve is a succession of points that constantly change direction, in other words, it isn’t straight.**

The image below shows a succession of points that always go in the same direction. When the points are connected, they form a straight line.

In the image below, we can see a succession of points that constantly change their direction. When these points are connected, they form a curve.

Within the curved lines, we can find **open and closed curves. **

The open curves are the ones that are impossible for us to reach the starting point again if we were to follow the succession of points with a pencil, without lifting it from the paper.

This is an example of an open curved line:

The closed curves are the ones where we can return to the starting point if we were to follow the dots with a pencil, without lifting it from the paper.

This is an example of a closed curved line:

Here are some other examples of open and closed curves:

##### Open Curved Lines:

##### Closed Curved Lines:

It’s easy, right? If you enjoyed this post and learned how to differentiate between open and closed curves, share it with your friends and classmates so that they can learn about them, too.

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### Learn More:

- Learn More about Straight Lines
- Straight and Curved Lines – Geometry
- How to Identify Open and Closed Polygons
- Geometric Figures and Straight Lines
- Do You Know What a Right Angle Is?

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## Aira VegaFeb 04 2018, 9:39 AM

Thank you it really help me very much