Types of Angles: Lesson for Kids

Instructor: Joy Blake

Joy has been a teacher for over ten years. She has primarily taught Middle School Math and has a Master's degree in Educational Leadership.

In this lesson, you will meet Natalie, a fourth-grade student who uses a clock and her schedule to discover different types of angles. By the end of this lesson, you will know what an angle is and how to identify the four different types of angles.

What is the schedule you follow at school? Natalie is a 4th grade student at Angle Elementary school. At Angle Elementary School, Natalie follows a schedule everyday. Different activities happen at different times throughout Natalie's school day. For instance, at 6:00 am, Natalie's mom wakes her up for school. Then, school starts at 8:00 am; Natalie's recess is at 11:00 am; and finally, Natalie gets dismissed from school at 3:00 pm. One day when Natalie looked at the clock, not only did she see the time, but she also saw angles.

What is an Angle?

An angle is formed by ''two rays that share the same vertex(corner).'' On a clock, an angle is formed when the long hand and the short hand meet. Angles are measured in degrees. As the degrees in an angle increase or decrease, the name of the angle changes. That is why there are different types of angles.

Types of Angles

The types of angles are:

  • Straight
  • Obtuse
  • Acute
  • Right

These are the different types of angles

Each time in Natalie's school schedule actually creates one of these angles.

When Natalie wakes up for school at 6:00 am, this forms a straight angle.

Natalie wakes up at 6am for school which happens to form a straight angle.

A straight angle looks like a straight line and measures exactly 180 degrees.

6 o

For Natalie, school starts at 8:00 am.

School starts at 8 o

On a clock, this time represents an obtuse angle.

This is an obtuse angle. It measures more than 90 degrees but less than 180 degrees.
obtuse angle

One of the smallest angles is the acute angle. This angle measures less than 90 degrees. If Natalie looks at the clock at 11:00 am, when it is time to go outside for recess, she would see an acute angle.

11 am forms an Acute Angle because it measures less than 90 degrees.

And finally, when Natalie gets ready to go home at 3:00 pm, she sees a right angle on the clock.

3 o
right angle
This is a Right Angle. It measures exactly 90 degrees.

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