Question 203696
12  sides  polygon
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remember  the sum of interior  angles  of  a  polygon  are  (n-2) * 180
{ triangle,,3  sided,,(3-2)*(180)=180 }
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Individual  interior  angles  are  { (n-2) * 180} / n
{ triangle  is 180 / 3 = 60}
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For  12  sided  polygon,,sum of  interior  angles  is  
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{ (n-2) * (180) } = (12-2)(180) = 1800  degrees
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individual  interior  angle  is,,1800/12 = 150  degrees