The principle of common region says that items within a boundary are perceived as a group and
assumed to share some common characteristic or functionality .
We perceive objects located within the same closed region as being grouped together.
The red rectangles border the elements contained in them.
The common region is often used in the GUI to group similar elements.
An example how use common region in a draw.
Vectornator Project: Gestalt-CommonRegion-Gestalt.vectornator (1.3 MB)