Answer:
[tex]\displaystyle 45°[/tex]
Step-by-step explanation:
Here is the formula for calculating the exterior angles of ANY polygon:
[tex]\displaystyle \frac{360°}{n},[/tex]where n represents the number of sides[/tex]
[tex]\displaystyle 45° = \frac{360°}{8}[/tex]
I am joyous to assist you anytime.