# What Is a Reflex Angle? (Mathematics Lesson)

# What Is a Reflex Angle?

An reflex angle is an angle greater than 180° and less than 360°.A reflex angle is greater than a straight line and less than a complete revolution.

# Real Examples of Reflex Angles

The angles below are all reflex angles:##### Curriculum

##### Interactive Test

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##### Note

**WHAT'S IN A NAME?**

Reflex comes from the Latin word 'reflexus' meaning "bent back".

A reflex angle looks like it has been bent back on itself.

# OTHER TYPES OF ANGLES

Obtuse angles are one type of angle, the other types are acute, right, obtuse, straight and full.# BE CAREFUL WHICH ANGLE TO USE

If there is a reflex angle between two lines, there will also be an acute or obtuse angle between the same two lines.Be careful which angle you need to use.