Since a supplementary angle is 180 degrees do:
180 - 77
= 103 degrees
Angles are measure of rotation, along with its direction of rotation. The supplement angle of 77° is 103°
Supplement angle of an angle is such that sum of both of them comes as 180°
Thus, if an angle is of A°, then its supplementary angle is 180° - A°
For the given case, we let the first angle be of A° = 77°, then its supplementary angle with measure B° is:
[tex]B^\circ = 180^\circ - A^\circ = 180^\circ - 77^\circ = 103^\circ[/tex]
Thus, The supplement angle of 77° is 103°
Learn more about supplementary angles here:
https://brainly.com/question/2882938
