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

An angle that is greater than 90 degrees but less than 180 degrees is classified as an obtuse angle. Obtuse angles can be understood in relation to right angles, which measure exactly 90 degrees. While acute angles are those less than 90 degrees, obtuse angles extend beyond that threshold but do not reach a full circle, stopping short at 180 degrees. The definitions are important for identifying different types of angles geometrically.

Additionally, a straight angle measures exactly 180 degrees, forming a straight line, which is not applicable in this case. The understanding of these angle measures is fundamental in geometry, as they help classify angles based on their measures relative to one another.