360 degrees ( all the way round the central point).
However, for one given sector it is 360/12 = 30 degrees.
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Each central angle of a regular 9 sided polygon: 360/9 = 40 degrees
This figure is a regular 12-sided polygon. Find m<4
A regular polygon having an interior angle measure of 168o has 30 sides and is called a triacontagon.