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OpenStudy (anonymous):
What is the sum of the interior angles of a convex nonagon? A. 1620° B. 1800° C. 1260° D. 3240°
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OpenStudy (alexandervonhumboldt2):
use formula (n-2)*180 where n represents number of sides: in your case n=9 (9-2)*180=7*180=1260
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