**In this module, you can study ****how angles are formed, ****the names of types and parts of angles, and ****how to measure angles using a protractor.**

** **

The number of degrees in an angle is unrelated to the length of its lines.

An angle's size has nothing to do with the direction the angle is facing.

**Study and practice**

- Study anglesRead about types of angles and test your knowledge at mathsisfun.com.
- Study degreesRead about degrees and test your knowledge at mathsisfun.com.
- Quiz yourself on anglesReady to test yourself on angles? Try this online quiz at mathopenref.com.

A **circle** has **360**

**A ****straight line** is **180**

A **right** angle is **90**

An **acute **angle is less than **90**

An **obtuse** angle is between **90 - 180**

*i.e. greater than 90 and less than 180*

A **reflex** angle is between **180 - 360**

*i.e. greater than 180 and less than 360*