Please help in this difficult math geometry quiz.

 From:  MO (MO_TE)
11167.41 In reply to 11167.1 
Hi
It's a very interesting and difficult quiz to solve inside moi. Looking at the math makes me dizzy. :)
I kinda solved it inside the nodeeditor by brute forcing the quiz conditions. (With 0.005% tolerance)
Take a look at attached file.