Is it possible to modify a polygon anywhere other than at the corner vertices?

The answer indicates that modifications to a polygon can only be made at its corner vertices. In the context of spatial data editing within software like ArcGIS Pro, polygons are defined by a series of vertex points that establish their shape and boundaries. The corner vertices serve as definitive points that outline the polygon's geometry.

When you want to alter the shape or size of a polygon, corner vertices are essentially the control points that can be manipulated to achieve this effect. Modifying these vertices allows for overall shape adjustments because they determine the positions of the polygon's edges. This means that after moving corner vertices, the adjacent edges will reconfigure accordingly to accommodate the new shape.

While tools may exist in various GIS programs that allow for different types of transformations or movements (such as scaling or reshaping), the fundamental structure of a polygon in a GIS context is predicated on these vertex points. Therefore, it's not feasible to modify a polygon effectively elsewhere, such as through the center or other methods, without affecting the overall integrity of the polygon's boundaries. Such limitations ensure the stability and consistency of spatial data representation, which are critical in analysis and mapping tasks within GIS environments.