What Is The Definition Of A Reflex Angle?
A reflex angle is any more than 180 degrees (half circle) and less than 360 degrees (full circle). A reflex angle always has either an obtuse or an acute angle on the other side.
It can be one of the more confusing angles because it’s on the ‘outside’ of the angle.
How Can I remember What A Reflex Angle Is?
Think of the angle your leg can make.
It will either be straight out (180) or bent at a reflex angle (the angle from your thigh to your shin).
How Do You Measure A Reflex Angle?
The first thing to do when measuring a reflex angle is to ensure that it is what you are being asked to measure. It’s easy to accidentally measure the other side and give the answer of an acute or obtuse angle!
There are two ways to measure a reflex angle:
- Measure the inner angle and then subtract it from 360.
- Use a full-circle protractor.
How Does A Reflex Angle Compare To Other Angles?
An acute angle measures under 90 degrees.
A right angle is always 90 degrees.
An obtuse angle is always between 90 degrees and 180 degrees.
A straight angle is always 180 degrees (a straight line).
A reflex angle is between 180 and 360.
