The angle opposite the 55 degree angle will also be 55 degrees. The other two angles will each measure 180 - 55 = 125 degrees.
An obtuse angle
an obtuse angle -_-
An obtuse angle.
It does not!
An obtuse angle
It is: 180-125 = 55 degrees
83 degree angle
a 60-degree angle
an acute angle measure from 1 degree to 89 degrees
an obtuse angle -_-
180-31=149 149 degree angle