Triptych
A triptych art is made up of three pieces or panels. Often used to impart narrative, create a sequence, or show different elements of the same subject matter, since its conception, the triptych has continued to add a new dimension to visual art. The triptych is also used to split a single piece of art into three, or to combine three pieces into one.
They can be placed closely together or spaced apart depending upon the effect you would like to create.