/sci/ - Science & Math

This random lass made a thread earlier (rude, yes) asking about homework, and she apparently needs to use a graphical method called "SEILECK VERFAHREN" to graphically solve a homework/test problem.
This was variously translated as "rope corner" and "link polygon". I'm trying to figure out whatever the fuck this is and how does it work, but I don't speak german and I can't find any sources in english. Google translate isn't really helping me parse through german wikipedia either.
If anyone can, please explain me this stuff. Feel free to post your answer next week or whenever the fuck to make sure she can't use it in her test, I don't really care and I'll be here either way.