What is the supplement of an angle that measures mathcal 77 deg (1 point)
The supplement is 103 deg because 180 deg - 77 deg = 103 deg
The supplement of the angle is 77 deg because supplementary angles are congruent.
The supplement of the angle is 13 deg because 90 deg - 77 deg = 13 deg .
The supplement of the angle is - 103 deg because 77 deg - 180 deg = - 103 deg .