What is a triptych?

​

"It’s a type of three-fold art that is typically hinged together as carved panels side by side. The artistic works compliment each other with similar subjects or a relatable message. Many early triptychs started showing up in religious gathering places as altarpieces and could be folded up and easily transported.

Photographers have also grown to appreciate the triptych style, using it to arrange three of their images within one frame with clear borders between them, or by using a separate frame for each photo and mounting them on the wall next to each other. Triptych photography might involve taking one picture and splitting it into three different parts or shooting three separate photos that are related."

Source: The Photo Argus