Question

The total of a regular polygon's interior angles is 3420°.

What is the size of each exterior angle? Give your answer to two decimal places.

Answer 1

Explanation:

(n-2)×180=3420

180n-360=3420

180n=3420+360

180n=3780

n=3780/180

n=21

that is, the number of sides is 21

to get the size of each exterior angle=

360/21

=17.14°