A tile to be used in an arrangement of identical tiles of an armor, the tile including an obverse face, a reverse face opposite the obverse face, and an endless edge between the obverse face and the reverse face, the endless edge being defined by a plurality of peripheral boundaries connected by curved sections, wherein the obverse face includes a first region and a second region each configured to be overlapped by a corresponding region of a reverse face of another tile, and a strike face region that is not overlapped by another tile, the first region and the second region being adjacent to the non-overlapped strike face region, the strike face region including a Y-shaped raised portion and no other raised portion or recessed portion, and the reverse face including a Y-shaped depression at a location corresponding to the location of the Y-shaped raised portion, and no other depression or raised portion.