Question

How do I find x in this problem?

Answer 1

S=(n-2)180
S=(5-2)180
S=3 x180
S=540

540= x+136+108+140+76
540=x+460
540-460=x
80=x
X=80

Answer 2

since it's a 5 sided figure, 540-136-108-140-76 wil lgive you your answer