In today’s post, we’ll start looking at a super important topic in math: **Angles.** What are they? What kinds exist? We’ll fill you in all about it here.

##### Definition

##### Parts

In planar geometry, two rays with the same endpoint always create two angles.

Two sides and a vertex, which is the endpoint of both sides, form the two angles, A and B.

##### Types

These are the angle types that are classified by their **size**:

- Acute Angle: Less than 90° and more than 0 °
- Right Angle: 90°
- Obtuse Angle: Greater than 90° but less than 180°
- Straight Angle: 180°

It’ll be easier to understand this with a picture. All the angles comprised in the pink zone are acute, and all the ones comprised in the blue zone are obtuse.

##### Examples

Now, we’re going to look at some examples that we see in our everyday lives.

In the ice cream cone and the space between the fingers, we can see acute angles.

We can see that in the following picture of the fingers making an L and in the corner of bulletin board, there are 90°, right angles.

The opened fan makes an angle greater than 90° and less than 180°, which gives us an obtuse angle.

And lastly, let’s look at an out-stretched arm that makes a straight angle of 180°.

Write to us and tell us what kind of angle you think the clock hands make!

If this post was helpful for you, share it with your friends! And if you want to learn more about Math, subscribe to Smartick for free and have fun with it.

### Learn More:

- Geometric Shapes: Characteristics of Triangles
- Learn about Angles: Obtuse, Straight, Right and Acute Angle
- Geometric Plane Shapes: Circles, Triangles, Rectangles, Squares, and Trapezoids
- Learn the Different Types of Angles with 9 Smartick Exercises
- The Relationship between Clocks and Angles

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## AndreaSep 26 2017, 5:35 AM

thanks for the information

## KanishkaJun 09 2019, 6:29 AM

It is very good for children

## Christina SekhoseJun 24 2019, 11:46 PM

This is a very helpful thing for students

## SmartickJun 25 2019, 9:45 AM

Thanks!

## MohithaAug 25 2019, 6:55 AM

Super 👌 help

Like this for Children!

## ShezadAug 27 2019, 9:01 PM

Are there more types of angles? Maybe include those too. Otherwise it is cool for kids.

## Dorothy ChandaOct 07 2019, 5:38 PM

Very educative and easy to understand and teach well