What are the symmetry and symmetry methods in cushion pattern design?

There are two methods to design the cushion pattern: axisymmetric and central symmetry. According to the query related data, one graph is folded along a straight line. If it can overlap with another graph, the two graphs are said to be symmetrical. Rotate the figure around a point 180. If it can coincide with another graph, the two graphs are said to be symmetrical or centrosymmetric about this point.