It can have any value at all. A definite value can be determined if the polygon is regular, but there is no justification for assuming that to be the case.
the center angle of any polygon is 360 degrees
Each central angle is (360) divided by (number of sides in the polygon).
A regular polygon with each interior angle measuring 120 degrees is a hexagon.
The smallest internal angle possible for a regular polygon is 60 degrees. So either the angle is not 12 degrees or it is not an internal angle.
A regular polygon having an interior angle measure of 168o has 30 sides and is called a triacontagon.
The largest exterior angle measure is 120o. It is the exterior measure of an equilateral triangle (which is a regular polygon).
It can have any value at all. A definite value can be determined if the polygon is regular, but there is no justification for assuming that to be the case.
If the measure of an interior angle of a regular polygon is 140o, the polygon is a nonagon (sometimes called an ennagon) having 9 sides.
The measure of each interior angle of a fifteen sided regular polygon, a pendedecagon, is 156o.
The interior angle of an octdecagon, an 18 sided regular polygon, is 160o.
A regular polygon cannot have an interior angle that is less than 60 degrees.
A regular polygon with 4 sides is a square. The measure of any interior angle of a square is 90 degrees.
the center angle of any polygon is 360 degrees
Each central angle is (360) divided by (number of sides in the polygon).
Tha will depend on how many sides the regular polygon has.
A regular hexagon.