Both angles are multiples of 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60 degrees.
The last angle would have to be 60 degrees as well. Since there are 180 degrees in a triangle, 60+60=120 and 180-120=60, it has to be 60 degrees.
The supplement to that angle is 60 degrees.
an interior angle + and exterior = 180 Angle A: 180-30=150 Angle B: 180-60=120 Angle C: 180-90=90 Angle D: 180-120=60 SO WHATS THE ANSWER!!!?????
180-120 = 60 degrees.
Rhombus.
60 degrees, 120 degrees
180 - 60 = 120 degrees.
120 degrees.
120 degrees. Each interior angle of an equilateral triangle is 60 degrees, so each exterior angle is 180 - 60 = 120 degrees It can also be worked out by the formula Exterior angle of a polygon = 360/no. of sides of the polygon = 360/3 = 120Each exterior angle measures 120 degrees and each interior angle measures 60 degrees because there are 180 degrees on a straight line.
Supplementary angle add to 180 degrees. So the supplement to a 60 deg angle is 180 - 60 = 120 degrees.
The 4th angle is 120 degrees because the 4 interior angles in parallelogram add up to 360 degrees.
Each exterior angle: 60 degrees Each interior angle: 120 degrees