Outside Contributions

 

1. Circle and Square: Explorations in Symbology - by Mark A. Riddle

2. Water Retention Magic Squares - by Craig Knecht

 

 
CHINESE TALISMAN, date unknown
This apparently simple coin actually demonstrates the square and circle relationship with mathematical precision.  The quincunx pattern can be seen as well.  This geometrical layout would serve well as the ground plan for temple design.