Question

the sum of angles of a polygon is 3420°. what is the sum of angles of a polygon with one side more​

Answer 1

Answer:

your answer

Step-by-step explanation:

180(n-2)=3420 Divide each side by 180. n-2=19 Add 2 to each side.

Answer 2

Answer:

(n-2)x180=3420

n-2=19

n=21

if add 1

(22-2)x180

3600

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