Question

to find the angle sum of a convex polygon with 9 sides

Answer 1

ANSWER:

The sum of the angles is 1260°.

EXPLANATION:

$\boxed {\text{Sum of all interior angles = } (n - 2) \times 180}$

Given that there are 9 sides, n = 9

Sum of angles = ( 9 - 2) x 180 = 1260°

Therefore the sum of the angles in 9 sided polygon is 1260°.

Answer 2

Hey,this is the answer!!!!

To find the sum of interior angles of a polygon use 180(n-2),where n is the number of sides: Sum of the interior angles=180(9-2)=180(7)=1260°
If u don't have remember this formula,though,u can divide a polygon into triangles. Then count the triangles and multiply that number by 180
7 triangles×180=1260

Hope that this ans will help u!!!!!

Plz, mark my answer as brainliest!!!!!