Acute angle
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An angle that measures greater than 180o but less than 270o is obtuse.
An acute angle measures less than 90 degrees.
An acute angle is less than 90 but greater than 0 degrees
No. An obtuse angle is greater than 90o and less than 180o. A straight angle measures 180o.
A reflex angle is greater than 180 but less than 360 degrees