Answer:
5
Step-by-step explanation:
<u>(n-2)180 = 108</u>
n
Distribute
180n-360=108n
-360=-72n
5=n
n=5
to find the area of a rectangle is LxW=A
plug in the given numbers you have
L = 7
W = x-8
A = 42
7 * x-8 = 42
7x-56= 42
solve for X
Sum of interior angles in a pentagon=540°
148+112+2x+2x+10+90=540
360+4x=540
4x=540-360
4x=180
x=180/4
x=45°
