Starting at a given point, angles of 12 degrees would divide a circle into 30 equal angles. You would have 30 lines radiating out from one point, equally spaced.
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180 degrees - 168 degrees = 12 degrees (the exterior angle) 360/12 = 30 It will have 30 sides.
Every minute on a clock is six degrees. 12:16 would be 96 degrees. 12:17 is 102 degrees. 98 degrees, an obtuse angle, would be just past 12:16.
Each interior angle in 12-sided polygon is 150 degrees.
If it is a regular 12 sided polygon then each interior angle is 150 degrees.
The 12 angles add up to 1800 degrees and 1800/12 = 150 degrees