Question

In a regular polygon of n side,each interior angle is 5 times the exterior angle . Find n

Answer 1

(2n-4)*90°\n*5=360°\n

=>(2n-4)*90°\n=360*5\n

=>(2n-4)*90=360*5*n/n

=>2n-4=360*5/90

=>2n-4=20

=>2n=24

n=24/2=12