1
s a pan-European style that lasted between the mid 12th Century and the 16th Century. It is usually characterized as a style of masonry building that makes heavy use of cavernous spaces with walls broken up by overlaid tracery
2
is a self-supporting arch above walls and beneath a roof
3
specific form of buttress composed of an arch that extends from the upper portion of a wall to a pier of great mass, in order to convey to the ground the lateral forces that push a wall outwards, which are forces that arise from vaulted ceilings of stone
4
an archway with curved sides that meet at a point, rather than a smooth semi-circular curve. This design was first used in medieval Islamic architecture, where engineers realized it concentrated the stress of the building and allowed for taller arches, thinner walls, and much more interior space.
5
semicircular, arches were commonly used for ancient arches that were constructed of heavy masonry. Ancient Roman builders relied heavily on the rounded arch to span great lengths. Several rounded arches that are constructed in-line and end-to-end in a series form an arcade, e.g. in Roman aqueducts.
6
ceiling or roof consisting of a series of semicylindrical arches.
7
architectural style current in Europe from about the mid-11th century
8
a structure made of stone or brick that sticks out from and supports a wall of a building or an arch
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