If the interior angles add up to 1800 degrees then it will have 12 sides
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It will have (1800+360)/180 = 12 sides
no a regular polygon has 360 degrees and it can have 4 or more sides
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.
If all of the interior angles of the polygon add up to 180 degrees, then the polygon is a triangle.
Smallest possible interior angle of regular polygon is 60 degrees (triangle). The greater the number of sides, the greater each interior angle. If exterior angle is 30 degrees, the polygon has 12 sides.