Help needed with fan style

Hello! I started making a mod for Mindustry and started with sprites first. As I don’t have direct ideas to go with I just made whatever came to my mind, but then I ran into issue.

You see I wanted to give specific tiles fans to make them look more authentic but I am having trouble with getting rotation angles just right. I’d like to make them equally spaced ( e.g for 6 blades 16.6 degrees , 13 blades 7.7 degrees, you get the idea ) and since I want sprites to look clean, I need them to be perfect.

Any suggestions or recommendations todo this?