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January 29, 2015

January 29, 2015

Posted by **ssss** on Tuesday, September 24, 2013 at 1:11am.

- math -
**Jai**, Tuesday, September 24, 2013 at 3:14amFormula for getting an interior angle of a regular polygon with n sides:

I = 180(n-2)/n

Substituting,

I = 180(18-2)/18

I = 160 degrees

Hope this helps~ :3

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