The measure of the supplement of the angle 120° is?

The correct answer is: 60°

If the sum of the measures of two angles is 180 degrees , the angles are called supplementary angles.

Here, supplement of the angle 120° and 120° are added to get 180 degrees.

supplementary angle = 180° − given angle

supplement of 120° = 180° – 120° = 60°.

Therefore, the measure of the supplement of the angle 120° is 60° .