Question

what is the sum of the interior angles of a polygon having 9 sides??

Answer 1

Hi friend!!

We know that,

The sum of interior angles of a polygon with n sides is 180(n - 2).

So, the sum of the interior angles of a polygon having 9 sides is 180(9-2)=180×7

=1260

I hope this will help you ;)

Answer 2

we know that sum of interior angles in a polygon = (2n - 4)90° , where n is the number of sides

therefore , in polygon with 9 sides ,the sum oc interior angles will be

= (2×9 - 4)×90°

= (18 - 4)×90°

= 14 × 90°

= 1260°

hope this helps. ....

wiyh regards...
#Misa