An angle that is 40 degrees is an acute angle. Anything below 90 degrees is acute while anything above is obtuse.
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the complementary angle of 40 degrees is 50 degrees.
A 40 degree angle is the COMPLEMENT of a 50 degree angle.
40 degrees
Exterior angle 40 degrees Interior angle 140 degrees
The angle of the majority of V-belts is 40 degrees.