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A 32 sided polygon is also called a triacontadigon (or triacontakaidigon) or 32-gon has 20 triangles and 12 pentagons.
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A regular 12 sided polygon each interior angle measures 150 degrees
The sum of the interior angles of a n-gon is (n-2)*180 So, (n-2)*180 = 1800 ie n-2 = 10 so that n = 12 It is a 12 sided polygon or dodecagon.
Exterior angle of ANY regular n-sided polygon is 360/n degrees, in this case 360/12 ie 30o