Answer:
X= 9
M angle B = 79
Explanation: Add all of the angles and you should get 37x + 27. Then you have to substitute the number of sides into the equation.
(N-2) 180 N = the number of sides in the
shape. If this case, it’s 4
Once you substitute 4 in, you should get 360 once you solve it. So you should have 37x + 27 = 360. Then you just solve it from there. 360 - 27 = 333
37x = 333
—— —— X= 9
37 37
Now you just put in 9 for x.
8 (9) + 7
72 + 7
M angle B = 79
