A 120 degree angle is an obtuse angle. This means that the angle is between 90 and 180 degrees.
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An acute angle is an angle measuring between 0 and 90 degrees. Obtuse is 90 to 180 degrees and reflex is 180 to 360. 120 degrees is then an obtuse angle. hope this helps!
An isosceles triangle
Obtuse angle
There is no special name for a 120º angle.
120 degrees because there are 720 degrees interior angles in an hexagon.
Angle A + Angle B + Angle C = 180 degrees. 30+90+C=180 120+C=180 C=60 degrees.