The size of an exterior angle of a regular polygon is 40^circ Therefore, the polygon has __ sides. 4 8 9 10 1 pont

## Step 1The sum of the exterior angles of any polygon is always . This is a fundamental property of polygons.## Step 2Given that the size of an exterior angle of a regular polygon is , we can find the number of sides of the polygon by dividing the total sum of the exterior angles by the size of one exterior angle.### **Number of sides = **## Step 3Perform the division to find the number of sides.