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OpenStudy (anonymous):
In which polygon is the sum of the measures of the interior angles 2160°? A. Nonagon B. 12-gon C. Decagon D. 14-gon
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OpenStudy (dtan5457):
(n-2)180=2160 180n-360=2160 180n=2520 n=14 D. 14 gon
OpenStudy (dtan5457):
(n-2)180 Just remember to use this formula to figure out any polygon's interior sum of angles
OpenStudy (anonymous):
Okay. Thank you soo much!!
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