Which statement correctly defines an acute angle?

Which statement correctly defines an acute angle?

• A. an angle measure greater than 90 degrees
• B. an angle measure equal to 180 degrees
• C. an angle measure less than 90 degrees
• D. an angle measure equal to 360 degrees

Answer: (C)

An acute angle is defined by its measure being smaller than a right angle, specifically less than 90 degrees. That’s why the statement describing an angle with a measure less than 90 degrees correctly defines an acute angle. The other possibilities describe different types of angles: greater than 90 degrees is an obtuse angle, equal to 180 degrees is a straight angle, and 360 degrees is a full rotation.

An acute angle is defined by its measure being smaller than a right angle, specifically less than 90 degrees. That’s why the statement describing an angle with a measure less than 90 degrees correctly defines an acute angle. The other possibilities describe different types of angles: greater than 90 degrees is an obtuse angle, equal to 180 degrees is a straight angle, and 360 degrees is a full rotation.