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An obtuse angle is an angle between (but not including) 90 and 180 degrees, so some obtuse angles would be 91 degrees, 179 degrees, and 142 degrees.
No. An obtuse angle has a measure of between 90 and 180 degrees.
Obtuse
As 170 degrees is greater than 90 degrees, but less than 180 degrees, the angle is obtuse.
An obtuse angle is greater than 90 degrees and less than 180 degrees