An obtuse angle is one which is greater than 90 degrees and less than 180 degrees.
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An obtuse triangle has an obtuse angle.
An obtuse angle has no complementary angle.
115 degrees is an obtuse angle
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 obtuse angle