Rectangle polyomino
A rectangle is a polyomino that is diagonally directed from all four corners. When not punctured, they are polyominoes that are equivalent to their bounding box. All rectangles are wedges.
Symbol
Regex
ruld
A rectangle is a polyomino that is diagonally directed from all four corners. When not punctured, they are polyominoes that are equivalent to their bounding box. All rectangles are wedges.