Answer:
x = 16
k = 145 degrees
Explanation:
We can see that the polygon is 7 sided
The sum of the internal angles will
be:
(n-2)180: (7-2) * 180 = 900
By adding all internal angles, we get 900
5x + 10x + 9x + 1 + 9x - 14 + 9x + 1 + 10x + 5x = 900
57x -12 = 900
57x = 912
x = 912/57
x = 16
The side marked k
is 9x + 1
= 9(16) + 1 = 145 degrees