As the name implies, reflection reflects the motif horizontally, vertically, or diagonally along an imaginary mirror line. The solid lines in the examples below represent said imaginary mirror.
The Tile, reflected horizontally
The Tile, reflected vertically
The Tile, reflected horizontally and vertically
The Tile, reflected diagonally (1)
The Tile, reflected diagonally (2)
Raymond
I found this article on tesellations while surfing the web.
http://www.iucr.org/__data/assets/pdf_file/0011/14969/21sup.pdf
I thought you might find it interesting
Thanks, Wayne!!
That was a great article with wonderful illustrations!!