The following paragraph is from Dr. Asher Eder’s book The Star of David, which was published in 1987 in English in Jerusalem by Rubin Mass Ltd. The publication here is courtesy of Oren Mass
This is not an arbitrary exercise. It is indeed geometry which gives us a clue to this understanding. When we draw a circle and apply its radius to its circumference, we will find out that it fits exactly six times into it. Connecting the six centers of theirs, we get either a hexagon, or a hexagram.
As known, it is impossible to exactly square the circle (notwithstanding the value of pi = 3,14 which suffices in our daily needs to bring us near to this equation). In contrast, the above figures show the only possible direct relation between a circular and a cornered area. That means to say that the triangle as the most basic geometric unit with distinct corners can evolve directly from the circle which may represent infinity and harmony.