An overlapping circle grid is a geometric pattern of repeating, overlapping circles of equal radii in two dimensional. The two most common designs are based on circles centered on triangular square grid pattern of dots. Patterns of the seven overlapping circles appear in historical artifacts from the 8th century BC. They are found on a Cypro-archaic I cup of the 8-7th century BC in Cyprus; at the Temple of Osiris at Abydos in Ancient Egypt; and Roman mosaics, for example at Herod's palace in the 1st century BC. The patterns are widely used to build girih decorations including 6 and 12 pointed stars in Islamic art. Patterns based on a square grid of overlapping circles are found in quilt design, in Ancient Egypt, as mentioned in the 1856 book The Grammar of Ornament, and in the Hindu temple at Prambanan in Java.