ANSWER
25 degrees
EXPLANATION
The angle given is 155 degrees.
We want to find the angle supplementary to it.
Supplementary angles are angles that sum up to give 180 degrees.
The angle given is also on a straight line and so the supplementary angle is the angle between the dahsed line and the line that is raised up.
Therefore, the supplementary angle is:
[tex]180-155=25^o[/tex]
The supplementary angle to 155 degrees is 25 degrees
