That means the angle is between 90 and 180 degrees. Not bad eh? Lastly, you’re going for an acute angle. That’s one that’s less than 90 degrees. ... An angle between 90° and 180° is obtuse.

Half of a full rotation is 180 degrees. ... If an angle is greater than 90 degrees, but less than 180 degrees, it's called an obtuse angle. An angle greater than 180 degrees, ...