A roof formed by a series of arches, roughly forming a semicircle. A three-dimensional arch.
An example of a domed roof.
A dome composed of short, straight pieces joined to form triangles; invented by Buckminster Fuller.
A dome composed of a series of arches, joined together with a series of horizontal rings called parallels.
A triangular shape that adapts the circular ring of a dome to fit onto a flat supporting wall.
A support ring that resists the outward force pushing against the lower sides of a dome.