we will use formula
[tex] \theta=\frac{180(n-2)}{n} [/tex]
where
theta is angle
n is number of sides
we are given
n=15
we can plug it
[tex] \theta=\frac{180(15-2)}{15} [/tex]
now, we can solve for theta
[tex] \theta=\frac{60(15-2)}{5} [/tex]
[tex] \theta=12*13 [/tex]
[tex] \theta=156 [/tex]
so,
option-D.........Answer
