The name quincuncial refers to this arrangement: the north pole at the center and quarters of the south pole in the corners form a quincunx pattern like the pips on the five face of a traditional die. The projection has the distinctive property that it forms a seamless square tiling of the plane, conformal except at four singular points along the equator.
The term "quincuncial" describes an arrangement where the north pole is at the center and the south pole's quarters are positioned in the corners, forming a pattern resembling the pips on a die's five-sided face. This projection exhibits a unique property of creating a seamless square tiling of the plane, with the exception of four specific points along the equator.