The sum of the interior angles of a pentagon is 6x + 6y. Find y in the terms of x
-
A.
y = 90 – x -
B.
y = 150 – x -
C.
y = 60 – x -
D.
y = 120 -x
Correct Answer: Option A
Explanation
6x + 6y = (n – 2) 180
6x + 6y= (5 – 2) 180
6(x + y) = 3 * 180
x + y = (3 * 180)/6
x + y = 90o
y = 90 – x