Answer:
42 degrees
Step-by-step explanation:
180-138 = 42
angles 1, 2, and 5 are all 139 degrees
angles 7, 3, 4, and 6 are 42 degrees
42°
in the attached image. hope this helps!
Please refer to the attachment for the answer and explanation. Hope it helps!!
by the looks of it its saying what the difference was each time
