Final answer:
The number of sides of the polygon is 12.
Step-by-step explanation:
To find the number of sides of a polygon given the size of each exterior angle, we can use the formula:
Number of sides = 360° / Size of each exterior angle
In this case, the size of each exterior angle is given as 30°. Plugging this value into the formula:
Number of sides = 360° / 30°
Simplifying this expression, we get:
Number of sides = 12
Therefore, the polygon has 12 sides.