where n = number of sides
total sum of interior angles: (n - 2) * 180 so (12-2)*180
then divide that number by n 10*180 / 12
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each measure of the angle at point h has a measure of
Providing that it's a regular decagon then each exterior angle will measure 36 degrees
Each interior angle is 140 degrees. Each exterior angle is 220 degrees.
Each interior angle is 157.5
60 degrees