An acute angle is an angle measuring between 0 and 90 degrees.
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Any angle less than 90 degrees is called actue
A right angle is a angle with 90o
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So basically , you have an right angle and another angle . You draw an right angle over the angle your looking at and if its smaller than the right angle then its an acute angle . If its bigger than the right angle then its a obtuse angle . GoodLuck!(;
A 190 degree angle is a reflex angle.