Find the measure of each interior angle of a regular polygon 18-gon.

160

Step-by-step explanation:

finding the sum of all interior angles of the polygon:-

n is no of sides

= (n-2) * 180 = (18-2) * 180=16*180=2880 degree.

One angle formula = sum/no of sides

Sum of all eighteen angles=2880,

One angle=2880/18=160 degree.