Straight Angle - Definition and Examples

A straight angle is an angle that has a measure of 180 degrees. The figure below shows an angle whose measure is 180 degrees. The red arc shows the straight angle.

looking at the figure above, notice that the straight angle is made up of two right angles and the right angles are shown with two black symbols.

More examples of straight angles

Straight angles

Some properties of straight angles

  • It forms a straight line
  • It is half a complete angle.
  • It is the sum of two right angles
  • It is half of a revolution
  • A straight angle is formed by rotating one ray by 180 degrees in relation to another ray.

Recent math words

  1. What is an abacus? Definition and Chinese Abacus

    Jan 18, 22 08:00 AM

    What is an abacus? Learn quickly and easily to use an abacus to do math.

    Read More

  2. Width of an Object

    Jan 17, 22 09:15 AM

    What is the width of an object? Definition, explanation, and easy to understand real life examples.

    Read More

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.
Share this page: