I'm not used to math terms (it was like 10 years ago when I was in school), but I think this should be simple:
I need the formula to find this angle.
In the picture you can see I need the angle of the first vertex, but I also need the formula to find the other angles to the bottom right vertex, the bottom left vertex and so on.
Although the rectangle size is variable, I have access to its width and height, and also the X,Y coordinate of its center point.
Thank you beforehand!