Each interior angle measures 144 degrees and the 10 angles add up to 1440 degrees
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The sum of the interior angles add up to 3240 degrees.
The 7 interior angles add up to 900 degrees and each interior angle is 900/7
Interior angles add up to 180 degrees Exterior angles add up to 360 degrees
The interior angles add up to 3600 degrees
The interior angles add up to 4680 degrees