"Capital and Springing of Arch, from the Hall of Abencerrages, Alhambra." — Encyclopedia Britanica, 1893

Abencerrages

"Capital and Springing of Arch, from the Hall of Abencerrages, Alhambra." — Encyclopedia Britanica,…

"The portion of a pier or other structure that recieves the thrust of an arch or the end-weight of a truss."-Whitney, 1902

Abutment

"The portion of a pier or other structure that recieves the thrust of an arch or the end-weight of a…

"An ornament composed of two ogee curves meeting in the middle, each concave toward its outer extremity and convex toward the point at which it meets the other."-Whitney, 1902

Accolade

"An ornament composed of two ogee curves meeting in the middle, each concave toward its outer extremity…

"A small wing of a building; A pilaster or butress; The lateral face of the pier of an arch, extending from the edge of the opening."-Whitney, 1902

Alette

"A small wing of a building; A pilaster or butress; The lateral face of the pier of an arch, extending…

"A conduit for conveying water more particularly applied to structures for conveying water from distant sources for the supply of large cities." — Williams, 1889

Aqueduct

"A conduit for conveying water more particularly applied to structures for conveying water from distant…

A Roman aqudect.

Roman aqueduct

A Roman aqudect.

"The ruined aqueducts in the Campagna." — Young, 1901

Ruined aqueducts

"The ruined aqueducts in the Campagna." — Young, 1901

"Arabesque is a style of ornamentation in which are represented men, animals (the latter consisting of mythic as well as actual forms); plants, with leaves, flowers and fruit; mathematical figures, etc.; the whole put together in a whimsical way, so that, for instance, the animals not merely rest upon the plants, but grow out of them like blossoms."—(Charles Leonard-Stuart, 1911)

Arabesque Archway

"Arabesque is a style of ornamentation in which are represented men, animals (the latter consisting…

"The main rib or arch-band which crosses a vault at right angles and separates adjoining bays from each other. Image: Arcs in vaulting, perspective and plan. A B, C D, arcs doubleaux; A D, C B, arcs ogives; A C, B D, arcs formerets."-Whitney, 1902

Arc Boutant

"The main rib or arch-band which crosses a vault at right angles and separates adjoining bays from each…

The Arc de Triomphe de L'etolile in Paris

Arc de Triomphe de L'etolile

The Arc de Triomphe de L'etolile in Paris

An arcade is a series of apertures or recesses with arched ceilings or soffets. A series of arched openings round public squares, markets, courts, etc.

Arcade

An arcade is a series of apertures or recesses with arched ceilings or soffets. A series of arched openings…

An arcade is a series of apertures or recesses with arched ceilings or soffets. A series of arched openings round public squares, markets, courts, etc.

Arcade

An arcade is a series of apertures or recesses with arched ceilings or soffets. A series of arched openings…

"In street architecture a covered way or passage, either open at the side with a range of pillars, or completely covered over. The finest arcades of this description are to be found in Paris." — Encyclopedia Britanica, 1893

Arcade

"In street architecture a covered way or passage, either open at the side with a range of pillars, or…

"The blocks, which are technically known as voussoirs, should be of a wedge shape, the center or top block being the keystone A; the lower blocks B B which rest on the supporting pier are the springers, the upper surface of which is called the skewback, C C; the side blocks, as D, are termed the hauches. The lower surface or soffit of the arch is the intrados, E, and the upper surface the entrados, F. The rise of the arch is the distance from the springing to the soffit, G, the width between the springers is called the span, H, and the radius I. The triangular spaces between the arches are termed spandrils, K." — The Encyclopedia Britannica, 1910

Arch

"The blocks, which are technically known as voussoirs, should be of a wedge shape, the center or top…

An arch

Arch

An arch

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts an arch.

Arch

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts an arch.

Arch

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts an arch.

Arch

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts an arch.

Arch

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

"Showing the arch of the foot, and how a high-heeled shoe props it up on end." — Ritchie, 1918

High Heel and Arch of Foot

"Showing the arch of the foot, and how a high-heeled shoe props it up on end." — Ritchie, 1918

Arch of Titus (Rome)

Arch of Titus

Arch of Titus (Rome)

"The elevation of Bowstring Arch, High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

Bowstring Arch

"The elevation of Bowstring Arch, High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

Elipse arch.

Arch

Elipse arch.

Equilateral arch.

Arch

Equilateral arch.

Horseshoe arch.

Arch

Horseshoe arch.

Lancet arch.

Arch

Lancet arch.

Segment arch.

Arch

Segment arch.

Segmental arch.

Arch

Segmental arch.

Semicircle arch.

Arch

Semicircle arch.

"Arches of S. Apol linare Nuovo, Ravenna." — The Encyclopedia Britannica, 1910

Arches

"Arches of S. Apol linare Nuovo, Ravenna." — The Encyclopedia Britannica, 1910

An ancient bath-room (as discovered).

Bath-Room

An ancient bath-room (as discovered).

An illustration of a simple arch bridge spanning a small river.

Arch Bridge

An illustration of a simple arch bridge spanning a small river.

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today.

Arch Bridge

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by…

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today.

Arch Bridge

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by…

"The bridge over Conway at Llanrwst in Wales, the design for which was furnished by Inigo Jones in 1634. The middle arch has a span of 58 feet. The structure is easily set in vibration, and is known as the 'shaking bridge.'" — Encyclopedia Britanica, 1893

Llanrwst Bridge

"The bridge over Conway at Llanrwst in Wales, the design for which was furnished by Inigo Jones in 1634.…

"Plan of High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

Bridge Plans

"Plan of High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

"The covered bridge over the Ticino at Pavia was erected, under Gain Galeazzo Visconti, about the end of the 14th century. This bridge, which still exists, has seven pointed brick arches, each 70 feet in span and 64 feet in height; the depth of the arch ring at the crown is 5 feet, 6 inches." — Encyclopedia Britanica, 1893

Ticino Bridge

"The covered bridge over the Ticino at Pavia was erected, under Gain Galeazzo Visconti, about the end…

"Three center arches, employed in French Flamboyant." — The Encyclopedia Britannica, 1910

Center Arch

"Three center arches, employed in French Flamboyant." — The Encyclopedia Britannica, 1910

"Four center arches, employed in the Perpendicular and Tudor periods." — The Encyclopedia Britannica, 1910

Center Arch

"Four center arches, employed in the Perpendicular and Tudor periods." — The Encyclopedia Britannica,…

"Doorway of Barfestron Church, Kent." —D'Anvers, 1895

Barfeston Church

"Doorway of Barfestron Church, Kent." —D'Anvers, 1895

Illustration of circle with segments labeled and arch.

Segments of Circle and Arch

Illustration of circle with segments labeled and arch.

"This arch is the most modern and the best preseved of all the buildings which remain of the Imperial period. Probably it owes its preservation to the Christianity of its hero." — Young, 1901

Arch of Constantine

"This arch is the most modern and the best preseved of all the buildings which remain of the Imperial…

"The vast Arch of Constantine owes much of its interest to its sculptures having been borrowed from a Trajan monument of earlier date." —D'Anvers, 1895

Arch of Constantine

"The vast Arch of Constantine owes much of its interest to its sculptures having been borrowed from…

"The arched crown in its earliest form was introduced by Henry V.; and, with the arches crosses, which from the time of Henry VI always have been crosses patees, appeared to supersede the earlier foliage upon the circlet." — Encyclopedia Britannica, 1893

Crown

"The arched crown in its earliest form was introduced by Henry V.; and, with the arches crosses, which…

"The form of the arches shown appear for the first time upon the great seal of Edward VI." — Encyclopedia Britannica, 1893

Crown

"The form of the arches shown appear for the first time upon the great seal of Edward VI." — Encyclopedia…

"The crown made for Charles II and also worn by James II, William III, and Anne, closely resembled an earlier type; and, indeed, it differed only in its proportions from the crown of more recent times." — Encyclopedia Britannica, 1893

Crown

"The crown made for Charles II and also worn by James II, William III, and Anne, closely resembled an…

"The crown made for Charles II and also worn by James II, William III, and Anne, closely resembled an earlier type; and, indeed, it differed only in its proportions from the crown of more recent times." — Encyclopedia Britannica, 1893

Crown

"The crown made for Charles II and also worn by James II, William III, and Anne, closely resembled an…

A recent form of the English Crown.

Crown

A recent form of the English Crown.

"The crown made for the coronation of Queen Victoria, has its entire surface completely covered with jewels, its circlet, crosses, fleurs-de-lys, arches, and mound being alike in displaying varieties of the same precious constructive materials." — Encyclopedia Britannica, 1893

Crown

"The crown made for the coronation of Queen Victoria, has its entire surface completely covered with…

"Cusped arch; Christchurch Priory, Hants." — The Encyclopedia Britannica, 1910

Cusped Arch

"Cusped arch; Christchurch Priory, Hants." — The Encyclopedia Britannica, 1910

"Cycloidal Arch. Elliptical Arch."-Whitney, 1902

Cycloidal Arch

"Cycloidal Arch. Elliptical Arch."-Whitney, 1902

Turner painted this picture of The Devil's Bridge in England. It is from the "Liber Studiorum".

The Devil's Bridge

Turner painted this picture of The Devil's Bridge in England. It is from the "Liber Studiorum".

"Longitudinal and Vertical section of the skull of a dog, with mandible and hyoid arch. an, anterior narial aperture; MT, maxillo-turbinal bone; ET, the ethmo-turbinal; Fr, frontal; Pa, pariental; IP, interparietal; SO, supra-occipital; ExO, sphenoid; OS, orbito-sphenoid; PS, presphenoid; Pl, palatine; Vo, vomer; Mx, maxilla; PMx, premaxilla; sh, stylo-hyal; eh, epi-hyal; ch, cerato-hyal; bh, basihyal; th, thyro-hyal; s, symphysis of mandible; cp, coronoid process; cd, condyle; a, angle; id, inferior dental canal. The mandible is displaced downwards, to show its entire form; the * indicated the part of the cranium to which the condyle is articulated." —The Encyclopedia Britannica, 1903

Dog Skull

"Longitudinal and Vertical section of the skull of a dog, with mandible and hyoid arch. an, anterior…

A passageway covered by a succession of arches supported by columns.

Doric Arcade

A passageway covered by a succession of arches supported by columns.

Common to Europe and Asia, the rock dove makes its home among the high rocks of the coast.

Rock dove

Common to Europe and Asia, the rock dove makes its home among the high rocks of the coast.

"Drop arches, with centers within the arch." — The Encyclopedia Britannica, 1910

Drop Arch

"Drop arches, with centers within the arch." — The Encyclopedia Britannica, 1910

"Upright elliptical arch, sometimes called the egg-shaped arch, employed in Egyptian and Sassanian architecture." — The Encyclopedia Britannica, 1910

Elliptical Arch

"Upright elliptical arch, sometimes called the egg-shaped arch, employed in Egyptian and Sassanian architecture."…

"Equilateral pointed arches, described from two centers, the radius being the whole width of the arch." — The Encyclopedia Britannica, 1910

Equilateral Arch

"Equilateral pointed arches, described from two centers, the radius being the whole width of the arch."…

"The Italian city of Volterra still preserves in the Porta dell' Arco an interesting relic of Ertuscan times. The archway, one of the original gates of the ancient town, is about twenty feet in height and twelve feet in width. On the keystone and imposts are three curious heads, probably representing the guardian deities of the place."—Webster, 1913

An Ertuscan Arch

"The Italian city of Volterra still preserves in the Porta dell' Arco an interesting relic of Ertuscan…