בהצלחה לכולנו

אביבה

gwydir.demon.co.uk/jo/tess/index.htm
www.tessellations.org/eschergallery1thumbs.htm
www2.spsu.edu/math/tile/grammar/moor.htm
alefefes.macam98.ac.il/article/article.asp?n=21

gwydir.demon.co.uk/jo/tess/tess.htm
gwydir.demon.co.uk/jo/tess/tri.htm