hello to all members,

i dont know where to post this, so if anybody could help or send me in the right direction would be great.
I run a Mazak 400n horizontal mill. i just started milling about a year ago so i feel im comfortable with the basics but still have a ton to learn. i can find (x,y) zero for the b0, b90, b180, and b270 sides of a block with an edge finder, but when it comes to finding (x,y) on b45, b38, or b315 i didnt need to know that until now. I dont know how to do it. can anybody help?

thanks, Ed