Question

PLS HELP!!!!
Determine the value of x.
A) 160°
B) 78°
C) 240°
D) 80°

Answer 1

The answer is D:80 degrees.

Explanation:

Answer 2

D) 80°

Explanation:

(n - 2)180 = 4(180) = 720

78 + 134 + 136 + 132 + 2x + x = 720

3x + 480 = 720

3x = 240

x = 80