Exterior angles 360 degrees
Interior angles 1260 degrees
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Each interior angle measures 140 degrees
Each interior angle measures 140 degrees
It is 360/9 = 40 degrees.
140 degrees.
It's impossible to tell, unless it's a regular nonagon. All we're sure of isthat all nine of them total up to 360 degrees.If it happens to be a regular nonagon, then each one is 40 degrees.