Answer :
The sum of the interior angles of a polygon follows this rule:
[tex](n-2)\cdot180[/tex]Where n = 13, the number of sides.
[tex](13-2)\cdot180=11\cdot180=1980[/tex]
The sum of the interior angles of a polygon follows this rule:
[tex](n-2)\cdot180[/tex]Where n = 13, the number of sides.
[tex](13-2)\cdot180=11\cdot180=1980[/tex]