Answer:
graph the curve that models the expression is the first on, I don’t know the rest
Step-by-step explanation:
They are supplementary angles because their sum equals 180 degrees, and they are adjacent because they share a side.
For the first part, the answer is choice B) 360. This applies to any polygon and it doesn't have to be an octagon. The sum of the exterior angles of any polygon is always 360 degrees. This is something you should memorize or have on a reference sheet.
For the second part, the answer is choice C) 142 degrees. We have a parallelogram (specifically a rhombus but that doesn't matter) so the adjacent angles are supplementary. This means they add to 180 degrees. Solving x+38 = 180 leads to x = 142
68 because I found out on internet
