Answer:
[tex]3240^\circ[/tex]
Step-by-step explanation:
The sum of the interior angle measures of a convex n-gon in degrees is equal to [tex]S=180(n-2)[/tex]. Therefore, a convex 20-gon's interior angles measure in total [tex]180(20-2)=180(18)=3240^\circ[/tex].
