What is the symbol for parallelogram?

The symbol for a parallelogram is typically represented by a four-sided figure (quadrilateral) with opposite sides that are equal in length and parallel. In geometric notation, it is often denoted with the letters of its vertices, such as ABCD, where ABCD forms the parallelogram. However, there is no universally recognized single symbol like there is for triangles (Δ) or circles (○).