The shape with 12 side is called DoDeragon,
the degree for the shape is 140 degree....
-I'm guessing...sorry if it wrong....
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A dodecagon
Dodecagon 12 sides with 12 angles
A regular polygon with exterior angles of 30 degrees has: 360/30 = 12 sides
12 sides
The general formula for the sum in degrees of the interior angles of a regular polygon with n sides is 180(n - 2). The name "dodecagon" means a polygon of 12 sides. Therefore, the sum of the angles is 1800 degrees.