Angles that measure between 90 and 180 are called obtuse angles. Those below 90 are called acute angles, and those between 180 and 360 are called reflex angles.
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Obtuse angle
An acute angle is less than 90 degrees and zero degrees.
it's 120
The obtuse angle is greater than 90 degrees. It is the acute angle that is less than 90 degrees.
is called an obtuse angle. remembering trick: obtuse= large (more than 90 degrees) acute= cute/small (less than 90 degrees)