A group of elements are often perceived to be a single recognizable form or figure. The Closure also occurs when an object is incomplete, or parts of it are not enclosed. When presented with the right amount of information, our brain will jump to conclusions by filling in the gaps and creating a unified whole.

We perceive elements as one object rather than separate parts. Closure can help us minimize visual noise and convey a message, reinforcing a concept within a pretty small space. Closure could be used in icon design, where simplicity helps with communicating meaning clearly and swiftly.