The interior angles of a pentagon are 126o, 114o, y, 92o and 83o. Find the value of y.
-
A.
85o -
B.
95o -
C.
105o -
D.
115o -
E.
125o
Correct Answer: Option E
Explanation
Sum of the angle of a pentagon
= (2 x 5 – 4) x 90
= 540o
126 + 114 + y + 92 + 83 = 540
y = 540 – 415 = 125o