2 years ago

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

Mathematics

1 answer:

DanielleElmas [232]2 years ago

4 0

Step-by-step 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°

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