Question

find the sum of the interior angle measures of an 11-gon

Answer 1

the sum of all interior angles in a polygon is

180( n - 2), where n = "number of sides".

now, this is an 11-gon, so the sum is

180( 11 - 2)

180(9)

1620.

Answer 2

Sum = 180(n-2)

S = 180(11 - 2)

S = 180(9)

S = 1620º

Hope this helps!