An angle measuring between 90 and 180 degrees is known as which of the following?

An angle measuring between 90 and 180 degrees is known as an obtuse angle. By definition, an obtuse angle is one that is greater than a right angle (which measures exactly 90 degrees) but less than a straight angle (which measures exactly 180 degrees). This places obtuse angles specifically in the range between these two measurements, clearly distinguishing them from acute angles, which are less than 90 degrees, and straight angles, which do not fall into the specified range at all. Understanding the definitions and ranges of different types of angles is essential for accurately categorizing them in geometry.