Funicular curve
In architecture, the funicular curve (also funicular polygon, funicular shape, from the Latin: fūniculus, "of rope") is an approach used to design the compression-only architectural forms (like masonry arches) using an equivalence between the rope with hanging weights and standing arch with its load. This duality was noticed by Robert Hooke in 1675 ("as hangs the flexible line, so, but inverted, will stand the rigid arch").