A reentering polygon is a polygon in which one or more of its interior angles are greater than 180 degrees. This can create issues in certain applications, such as computer graphics and 3D modeling. As such, there are several synonyms for the term reentering polygon that may be more appropriate for specific contexts. Some of the synonyms include concave polygon, non-convex polygon, self-intersecting polygon and complex polygon. When dealing with geometry, it is important to understand these terms as they can have a significant impact on various calculations and simulations. Knowing the different synonyms can help professionals communicate more precisely and effectively when discussing geometric shapes.