Find the number of sides of a regular polygon whose each exterior angle has a measure of `45^@`.

Explanation

To find the number of sides of a regular polygon whose each exterior angle measures \( 45^\circ \), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between exterior angles and the number of sides**:
The formula to find the number of sides \( n \) of a regular polygon is given by:
\[
n = \frac{360^\circ}{\text{measure of each exterior angle}}
...