It is an obtuse angle because it is greater than 90 but less than 180 degrees.
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Complementary angle is 71 degrees and supplementary angle is 161 degrees
When an angle has a measure of 120 degrees, it is an obtuse angle. When an angle is an obtuse angle its measure is between 90 and 180 degrees. That is: 90 degrees < obtuse angle < 180 degrees.
An angle that measures 142 degrees is classified as an obtuse angle. In geometry, an obtuse angle is an angle that is greater than 90 degrees but less than 180 degrees. It falls between a right angle (90 degrees) and a straight angle (180 degrees).
It is the supplementary angle of 125 degrees which is 55 degrees
An angle of 342 degrees is a reflex angle