GR - Persian ceilings

[David Morris]

One ironic aspect of seeing a woman's face in the patterns of a
Persian ceiling is that their forms were created expressly to avoid
such imagery:

Because of the strict injunctions against such depictions of humans or
animals which might result in idol-worship, Islamic art developed a
unique character, utilizing a number of primary forms: geometric,
arabesque, floral, and calligraphic, which are often interwoven. From
early times, Muslim art has reflected this balanced, harmonious
world-view.
- Elisabeth Siddiqui, Islamic Art

Didn't tessellation get raised somewhere in ATD?

http://mathforum.org/sum95/suzanne/whattess.html

http://www2.spsu.edu/math/tile/historical/persian/index.htm

http://www.mi.sanu.ac.yu/vismath/sarhangi/index.html