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.
30*
To calculate the measure of a central angle of a regular nine-sided polygon, divide 360 degrees by the number of sides. In this case, divide 360 by 9. The measure of the central angle of a regular nine-sided polygon is 40 degrees.
Each central angle is (360) divided by (number of sides in the polygon).
Each interior angle of a regular 10 sided decagon measures 144 degrees
the center angle of any polygon is 360 degrees
30*
30
36
40
30
To calculate the measure of a central angle of a regular nine-sided polygon, divide 360 degrees by the number of sides. In this case, divide 360 by 9. The measure of the central angle of a regular nine-sided polygon is 40 degrees.
Each central angle of a regular 9 sided polygon: 360/9 = 40 degrees
Each central angle is (360) divided by (number of sides in the polygon).
Each interior angle of a regular 10 sided decagon measures 144 degrees
the center angle of any polygon is 360 degrees
6
The interior angle and central angle are supplementary, that is they always add up to 180 degrees, while the exterior angle and the central angle will always be the same.