Which angle has a measure of exactly 90 degrees?

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Multiple Choice

Which angle has a measure of exactly 90 degrees?

Explanation:
Understanding angle measures by degree helps identify the type of angle. A right angle is defined as exactly 90 degrees, so the angle that measures 90 degrees is called a right angle. In contrast, an acute angle has a measure less than 90 degrees, an obtuse angle is greater than 90 but less than 180 degrees, and a straight angle is 180 degrees. So the angle with 90 degrees is the right angle.

Understanding angle measures by degree helps identify the type of angle. A right angle is defined as exactly 90 degrees, so the angle that measures 90 degrees is called a right angle. In contrast, an acute angle has a measure less than 90 degrees, an obtuse angle is greater than 90 but less than 180 degrees, and a straight angle is 180 degrees. So the angle with 90 degrees is the right angle.

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