Summer exercice

 From:  Frenchy Pilou (PILOU)
9901.18 
A resultant problem for end holidays :)

Does always existing a Point P (x,y,z ) for make 4 planes P1, P2, P3, P4
from vertices A,B,C,D,E,F,G,H given on the 3D space ?

And how to find it ? ;)
https://moiscript.weebly.com/uploads/3/9/3/8/3938813/4_plans.3dm

EDITED: 20 Aug 2020 by PILOU