List of self-intersecting polygons

A self-intersecting polygon, also known as a complex polygon, is a polygon that intersects itself in such a way that it does not enclose a simple, non-overlapping area. These polygons can have interesting geometrical properties and can be described in various mathematical contexts. Here are some examples and types of self-intersecting polygons: 1. **Crossed Polygons**: A common example is the star shape, where the sides cross each other.