179.99 degrees
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An obtuse angle is any angle that's measurement is between 90 and 180 degrees. This type of angle lies in the second quadrant.
179 degrees
An obtuse angle is a measurement of 91 degrees to 179 degrees. If it is 90 degrees, it is a right angle. If it is 1 degree to 89 degrees it is an acute. If it is 180 degrees it is a straight angle.
An obtuse angle is an angle that has a degrees measurement greater than 90 and less than 180. Anything below 90 would be considered acute. Anything 180 would be considered straight.
An obtuse triangle has an obtuse angle.