What would a no sided polygon be? A dot is the closest thing that we can come to.

Now what shape has only one side? A circle, of course.

Next comes two sides. This would necessarily be two points with lines between them in a curve. This could be a football shape, or a crescent moon. We will go with the football shape, as it is symmetrical.

Next, a three sided polygon - a triangle, of course.

If you don't see where I'm going with this yet, hang on. What if we draw these together one at a time?
the point:

within a circle,

bordered by two lines (although turned from their usual position)

placed in a triangle,

thus creating the eye of God through Geometry.