Periodic Tessellation
Tesselation in which there is at least one subset of shapes that can be translated in any direction to cover the entire plane.
Examples
In the tessellation below:
the basic motif that can be translated to create a pattern of the same motif without any gaps or overlapping is the following:
In this example of a tessellation created with squares and equilateral triangles, the basic structure includes reflections and rotations of triangles and squares:
