180degrees.
From C2H5.OH:
Above is obviOusly wrong, that's a straight line. Correct answer is 140 degrees.
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Each interior angle measures 140 degrees
1260
Each interior angle measures 140 degrees
Each interior angle measures 140 degrees
The sum of the interior angles of a nonagon is (9 - 2) x 180o = 7 x 180o = 1260o In a regular nonagon, each interior angle is 1260o ÷ 9 = 140o