Step-by-step explanation:
Since you have 2 straight lines we know that its 180 degrees. Now that you know that take your angle of 55 degrees and subtract it from 180, you should get 125 degrees. Since the angles are mirrored and the lines are perpendicular you can fill out the rest. To find x you know that its gonna equal 125 degrees so subtract 3 from 125 and divide by 2.
