Triptych literally means three fold; three panels that were attached together and could be folded shut, often the centre panel was larger than the other two, the three paintings sharing a common theme. I think it was first used in early Christian art for alter paintings.
My painting(s) are equal sizes and will not hinge.
This is the centre of the three paintings; it is a painting of a statue seen and photographed in northern Italy a few years ago. It is not finished yet because I can't do the background colour matching and finish the ivy until I have all three paintings almost done. I have more work to do, I hope to show you more next week.