Flower of Life
Circles of one size, each through the centres of its neighbours. Every petal, lens and six-pointed star in it is an accident of the overlap.
About this pattern
Overlapping circles on a triangular lattice · Osirion, Abydos
Set circles of equal radius on a triangular lattice whose spacing equals that radius and each one passes through the six centres around it. Nothing else is constructed: the vesica between two circles, the six petals of a rosette, the hexagons and the stars are all leftovers of where the arcs cross. The figure is scratched into a granite column at Abydos and has been redrawn more or less continuously since.