
Is there some kind of measuring method that I could use to figure them out?
These are the reference points I want to find (the black dots):

I thought that too, but when I folded along the lines, I found out that it isn't.Adam wrote:it looks like it's divided into thirds diagonally
Well, I tried that, and apparently, it doesn't work with PDFs.aces21 wrote: there is an add-on called measureit