mandorla

Mathematically speaking, a mandala is based on the circle, a single-edged shape. They are often meant to represent wholeness or unity. A triangle has three edges, a square four, and so on. Each of these shapes, symbolically speaking, have their own meaning- their own particular use. For example, the pentagram has been used as a symbol for humanity. Arms, legs, head- making a five-pointed star. The symbolism of triangles with fertility (mother, father, child) or some kind of trinity of gods, is common. A square is often used to represent a church, an institution, the law. The circle, used as it is to represent oneness (since it is a shape constructed of one line) is well known among many religious traditions.

The mandorla? It’s really only used as a backdrop. As a containing symbol for other objects. I think, though, that it can stand on its own. It’s less often used, less the subject of an image, than a circle or a triangle. Hell, even seven-pointed stars are more common than a two-sided shape. Why is this?