Triptych is a style of photography that can allow a story to be told -three images in one. A photographic version of the classic three ceramic ducks mounted on the living room wall.

According to : https://www.photokonnexion.com/

Defining a Triptych

A triptych (pronounced Trip’tik), when applied to photography, is a group of three pictures. It could be three photographs mounted in a frame, closely associated pictures displayed near each other or three pictures in one image.

The subject of a triptych is an important defining characteristic. The pictures should have a common theme. This could be a story, similar compositional elements, colours, similar subject matter – anything that draws the pictures together as a group.