Question

find the measure of an interior angle of a regular polygon of 9 sides.​

Answer 1

Answer:

for interior angle 360 - sum of all sides

Answer 2

Answer:

140

Step-by-step explanation:

firstlywe have to find the totla number of the sum of the interior angles.

follow the steps----- sum of all interior angle =(2n-4) right angle

the n denotes the number of sides in the polynomial.

SO,  (2*9-4) right angle

(18-4) right angles.  

14 right angles, which means that (14*90)= 1260

Now to find each interior angle divide 1260/9

so the measure of each angle is 140.