\coordinate (P1) at ($(Delta)+(P1)$);
\coordinate (P2) at ($(Delta)+(P2)$);
\coordinate (P) at ($(Delta)+(P)$);
\coordinate (Q) at ($(Delta)+(Q)$);
\coordinate (A) at ($(Delta)+(A)$);
\coordinate (B) at ($(Delta)+(B)$);
