Question

aaaaaaquiiiiiiiiiiiiiiiiiiiiiiiiiii

Answer 1

Si=180°(n-2)

a)
2160°
180(n-2)=2160
180n-360=2160
180n=2160+360
180n=2520
n=2520÷180
n=14°

b)
2520°
180(n-2)=2520
180n-360=2520
180n=2520+360
180n=2880
n=2880÷180
n=16°

c)
3060°
180(n-2)=3060
180n-360=3060
180n=3060+360
180n=3420
n=3420÷180
n=19°

d)
3420°
180(n-2)=3420°
180n-360=3420
180n=3420+360
180n=3780
n=3780÷180
n=21