Answer :

clarch19

Answer:

sum of interior angles is 1980°

Step-by-step explanation:

(n-2)×180° = (13-2)×180°

= 11×180°

= 1980°

Answer:

1980 Degrees

Step-by-step explanation:

By Now You Must Know To Use The Equation:

(n-2)180

The 13 is n so now it is:

(13-2)180

13-2 is 11

So Now It Is

11 x 180

And Now The Answer Is 1980

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