If an angle measures less than 90º, it is an acuteangle.
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An acute angle is less than a right angle because it is greater than 0 but less than 90 degrees.
aubtuse
An obtuse angle is an angle more than 90 degrees. An acute angle is an angle less than 90 degrees, and a right angle is a 90 degree angle.
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.
An acute angle is one that is less than 90 degrees. A right angle is 90 degrees.