The unit for angle is degrees or °. There are different kinds of angles:
- If angle is <90 degrees = acute angle
- If angle is 90 degrees = right angle
- If angle is >90 but <180 degrees = obtuse angle
- If angle if 180 degrees = straight angle
- If angle is >180 but <360 degrees = reflex angle
- If angle is 360 degrees = perigon angle or round angle
