What do you call an angle greater than 90 degrees but less than 180 degrees?

An angle that is greater than 90 degrees but less than 180 degrees is referred to as an obtuse angle. This classification comes from the way angles are defined based on their measurements.

In geometric terms, an acute angle measures less than 90 degrees, while a right angle, which is exactly 90 degrees, is the benchmark for what distinguishes angles as either acute or obtuse. A straight angle, on the other hand, measures exactly 180 degrees, which marks the transition to angles that are reflex (greater than 180 degrees).

Therefore, since the angle in question exceeds a right angle but has not reached the measure of a straight angle, it fits perfectly within the definition of an obtuse angle. Understanding these definitions is crucial in geometry, as it allows for more complex reasoning about shapes, properties, and relationships between angles.