Parallelogon

In geometry, a parallelogon is a polygon with parallel opposite sides (hence the name) that can tile a plane by translation (rotation is not permitted).

A four-sided parallelogon is called a parallelogram.

The faces of a parallelohedron (the three dimensional analogue) are called parallelogons.

[2] Quadrilateral and hexagonal parallelogons each have varied geometric symmetric forms.

They all have central inversion symmetry, order 2.

A parallelogon is constructed by two or three pairs of parallel line segments. The vertices and edges on the interior of the hexagon are suppressed.
There are five Bravais lattices in two dimensions, related to the parallelogon tessellations by their five symmetry variations.