Quadrantals are their own reference angle, so 90 degrees.
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A 30 degree angle is an acute angle because it is greater than 0 but less than 90 degrees.
The reference angle for an angle with the measure of 175 degrees is 5 degrees
90 degreesThere are 90 degrees in a right angle.There are 90 degrees in a right angle
Obtuse. An acute angle is less than 90 degrees, a right angle is 90 degrees, and an obtuse angle is more than 90 degrees.
There are 90o in a right angle. A right angle is one-quarter of a full circle i.e. 360o.