Question

A polygon has 9 sides. What is its interior angle?

Answer 1

Answer:

equation for finding the interior angle of a polygon with 'n' sides

    =180(n-2)

interior angle of a polygon with 9 sides =180(9-2)

                                                                  = 1260

Answer 2

Answer:

180(n-2) /n

180(9-2) /9

180(7) /9

20*7

140