Barrel Vault See vault.

Baroque The seventeenth-century period in Europe characterized in the visual arts by dramatic light and shade, turbulent composition, and exaggerated emotional expression. 

Closed Form  A self-contained or explicitly limited form; having a resolved balance of tensions, a sense of calm completeness implying a totality within itself.

Balance An arrangement of parts achieving a state of equilibrium between opposing forces or influences. Major types are symmetrical and asymmetrical. See symmetry.