Attribution-Share Alike 4.0 truetrue English Bird heads on edge‑to‑edge puzzle pieces, together forming a periodic tiling, of which one piece out of three inverts...
out of 2 became a common side of 2 adjacent tiles. French Pavage issu d’un motif répétitif formé de 2 triangles équilatéraux bord à bord, dont chaque...
