It does not!
An obtuse angle
an obtuse angle -_-
An obtuse angle
It is: 180-125 = 55 degrees
obtuse
an obtuse angle -_-
An obtuse angle.
31.25 Just divide 125 by 4.
The angle opposite the 55 degree angle will also be 55 degrees. The other two angles will each measure 180 - 55 = 125 degrees.
Obtuse.
you divide the whole which is 125 by 5 because 20% is fifths so one fifth of 125 equals 25
Bigger than 90 (a right angle), less than 180 (a straight line).