California Assessment of Student Performance and Progress (CAASPP) Math Practice Exam

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What is an obtuse angle?

An angle greater than 180 degrees
An angle less than 90 degrees
An angle greater than 90 degrees but less than 180 degrees
An angle equal to exactly 90 degrees

The correct answer is: An angle greater than 90 degrees but less than 180 degrees

An obtuse angle is defined as an angle that measures greater than 90 degrees but less than 180 degrees. This means it opens wider than a right angle, which is exactly 90 degrees, but does not reach a straight angle, which is 180 degrees. The context is essential in geometry, as angles are classified based on their measures: acute angles are less than 90 degrees, right angles are precisely 90 degrees, obtuse angles fit the definition in question, and straight angles are equal to 180 degrees. Understanding these classifications allows for better visualization and comprehension of different angle types, particularly when analyzing geometric shapes or solving problems involving angles.