It is an acute angle because it's greater than 0 but less than 90 ndegrees
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It is: 180-42 = 138 degrees
41
42 degrees
An angle of 181 degrees is a reflex angle.
The 42 interior angles of a regular 42-agon add up to 7200 degrees and each angle is 7200/42 which is 171.'428571' degrees recurring decimal '428571'