Question 1033439
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A regular polygon has 30 sides
....find the angle at each vertex
....find each central angle
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<pre>
An exterior angle is  {{{360_degs/30}}} = 12 degs.

An interior angle is  180-12 = 168 degs.

<U>Check for an interior angle</U>:  {{{((30-2)*180)/30}}} = 168 degs. OK!

A central angle is  {{{360/30}}} = 12 degs.
</pre>