Types of Angles: Lesson for Kids

Lesson Transcript
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. Updated: 02/18/2020

What Is an Angle?

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 every day. 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.

An angle is formed by two rays that share the same vertex, or 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.

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Types of Angles

The types of angles are the following:

  • Straight
  • Obtuse
  • Acute
  • Right

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

For Natalie, school starts at 8:00 am. On a clock, this time represents an obtuse angle. An obtuse angle is a wider angle that measures more than 90 degrees but less than 180 degrees.

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's time to go outside for recess, she would see an acute angle.

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