Today a triptych can be any three artworks intended to be viewed together, but the format was developed and popularized in early christian art as one of a variety of polyptychs, or multi-panel works that were often folded to protect the artwork when not being viewed. Triptychs are interesting for the connection built between the three panels, which may be sequential, narrative, or thematically associated. The three-panel comic format is technically a kind of triptych...