Reflective symmetry (diagonal)
A polyomino has reflective symmetry over a diagonal if it can be flipped over a diagonal line to return an identical polyomino. This type of symmetry is represented by , the cyclic group of order 2.
A polyomino has reflective symmetry over a diagonal if it can be flipped over a diagonal line to return an identical polyomino. This type of symmetry is represented by , the cyclic group of order 2.