An acute angle is less than a right angle because it is greater than 0 but less than 90 degrees.
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If an angle measures less than 90º, it is an acuteangle.
aubtuse
An angle less than a right angle is considered an acute angle. Acute angles are defined as angles that measure greater than 0 degrees and less than 90 degrees. Therefore, there are an infinite number of angles that are less than a right angle, as any angle between 0 and 90 degrees (exclusive) would fall into this category.
An acute angle is less than 90 degrees.
A right angle is 90 degrees if an angle is wider than 90 it is obtuse if it is less than 90 it is an acute angle.