There are six individual principles commonly associated with gestalt theory: similarity, continuation, closure, proximity, figure/ground, and symmetry & order (also called prägnanz). There are also some additional, newer principles sometimes associated with gestalt, such as common fate.
Similarity– In gestalt, similar elements are visually grouped, regardless of their proximity to each other. They can be grouped by color, shape, or size.
Continuation– The law of continuity posits that the human eye will follow the smoothest path when viewing lines, regardless of how the lines were actually drawn.
Closure– It’s the idea that your brain will fill in the missing parts of a design or image to create a whole.
Proximity– Proximity refers to how close elements are to one another.
Figure/Ground– Your brain will distinguish between the objects it considers to be in the foreground of an image (the figure, or focal point) and the background (the area on which the figures rest).
Symmetry and Order– The law of symmetry and order is also known as prägnanz, the German word for “good figure.” What this principle says is that your brain will perceive ambiguous shapes in as simple a manner as possible.
Link– https://www.toptal.com/designers/ui/gestalt-principles-of-design
Video– https://www.youtube.com/watch?v=FryaH599ec0
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