Polygons and Quadrilaterals... Help

Answer:
That is an octagon (eight sides).
Interior Angle Total = 1,080
EACH interior angle = 180 - (360 / 8) = 135
n + 161 + (n -12) +(n + 30) + n + 134 + (n+16) + 126 = 1,080
5n + 455 = 1,080
5n = 625
n = 78.125
Step-by-step explanation: