Question

If the sum of all the interior angles of a polygon is 1440° find the number of sides it has.​

Answer 1

Answer:

if the number of sides of regular polygon be = n

sum of the interior angle =

(n-2) ×180°

(n-2)×180°=1440°

n-2= 1440°/180°

n-2= 8

n= 8+2

n = 10