Question

Find the sum of Interior angles of a polygon of given number of sides by using
formula (n - 2) x 180°.
(i) 12 sides
(ii) 9 sides
(iii) 22 sides​

Answer 1

Answer:

1, 12 - 2 x 100 = 10 x 180 = 1800

2. 9 - 2 x 180 = 7 x 180 = 1260

3. 22 - 2 x 180 = 20 x 180 = 3600