Definition of sacred Geometry:
http://www.luckymojo.com/sacreddefined.html
"The term "sacred geometry" is used by archaeologists,
anthropologists, and geometricians to encompass the religious,
philosohical, and spiritual beliefs that have sprung up around
geometry in various cultures during the course of human history. It is
a catch-all term covering Pythagorean geometry and neo-Platonic
gometry, as well as the perceived relationships between organic curves
and logarithmic curves. "