#5: sum of interior angles of a polygon = (n-2)*180. n=number of sides, which in this case is 6., so (6-2)*180= 720•
4x + 3x + 170 + 142 + 126 + 100 = 720
7x = 720 - 538
7x = 182
X = 182/7
X= 26• , so take x as “26” and multiply
3*26=78, 4*26=104.
8# sum of all exterior angles of a polygon=360•
x + x + 90 + 90 + 90 = 360
2x = 360 - 270
2x = 90
X = 90/2
x = 45•