In geometry, an n-sided antiprism is a polyhedron composed of two parallel copies of some particular n-sided polygon, connected by an alternating band of triangles. Antiprisms are a subclass of the prismatoids and are a (degenerate) type of snub polyhedron.
The standard circulating coinage of the United Kingdom is denominated in pounds sterling, and, since the introduction of the two-pound coin in 1994, ranges in value from one penny to two pounds. Since decimalisation, on 15 February 1971, the pound has been divided into 100 (new) pence. Before decimalisation, twelve pence made a shilling, and twenty shillings made a pound. British coins are minted by the Royal Mint in Llantrisant, Wales. The Royal Mint also commissions the coins' designs.
The British two pound (£2) coin of the pound sterling. Its obverse has featured the profile of Queen Elizabeth II since the coin’s introduction. Three different portraits of the Queen have been used, with the current design by Jody Clark being introduced in 2015. The reverse design features Britannia.
The British one pound (£1) coin is a denomination of the pound sterling. Its obverse bears the Latin engraving ELIZABETH II D G REG F D meaning, “Elizabeth II, by the grace of God, Queen, Defender of the Faith”. It has featured the profile of Queen Elizabeth II since the original coin's introduction on 21 April 1983. Four different portraits of the Queen have been used, with the latest design by Jody Clark being introduced in 2015. The design on the reverse side of the current, 12-sided coin features four emblems to represent each of the nations of the United Kingdom — the English rose, the leek for Wales, the Scottish thistle, and the shamrock for Northern Ireland, also two or three oak leaves — emerging from a single 5-branched stem within a crown.
In geometry, a dodecagon or 12-gon is any twelve-sided polygon.
The Cypriot pound, also known as the Cypriot lira, was the currency of Cyprus, including the Sovereign Base Areas in Akrotiri and Dhekelia, from 1879 to 2007, when the Republic of Cyprus adopted the euro. However, the self-proclaimed Turkish Republic of Northern Cyprus used and still uses on the official level the Turkish lira.
Vatican euro coins are issued by the Philatelic and Numismatic Office of the Vatican City State and minted by Istituto Poligrafico e Zecca dello Stato (IPZS), in Rome, Italy. The euro is the official currency of the Vatican City, although the Vatican is not a member of the Eurozone or the European Union.
The Fijian dollar has been the currency of Fiji since 1969 and was also the currency between 1867 and 1873. It is normally abbreviated with the dollar sign $, or alternatively FJ$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
The pound is the currency of Jersey. Jersey is in currency union with the United Kingdom, and the Jersey pound is not a separate currency but is an issue of banknotes and coins by the States of Jersey denominated in pound sterling, in a similar way to the banknotes issued in Scotland and Northern Ireland. It can be exchanged at par with other sterling coinage and notes.
The Tuvaluan dollar is the currency of Tuvalu, whose official international currency code is TVD. Tuvalu has never had banknotes of its own, and has been issuing coins since 1976. However, the Tuvaluan dollar is used as a unit of account, and is pegged to the Australian dollar at parity. From 1966 to 1976, Tuvalu officially used the Australian dollar. In 1976, Tuvalu began issuing its own coins, which continue to circulate alongside Australian coins. Tuvalu continues to use Australian banknotes. Tuvaluan coins are not legal tender in Australia. Similar to the Faroese króna's relationship to the Danish krone and the Panamanian balboa's relationship to the United States dollar, the Tuvaluan dollar is not an independent currency, but a variation of the Australian dollar.
The dollar is the currency of Kiribati. It is pegged at 1:1 ratio to the Australian dollar. Coins were issued in 1979 and circulate alongside banknotes and coins of the Australian dollar.
A uniform polytope of dimension three or higher is a vertex-transitive polytope bounded by uniform facets. The uniform polytopes in two dimensions are the regular polygons.
Coins of the Australian dollar were introduced on 14 February 1966, although they did not at that time include one-dollar or two-dollar coins. The dollar was equivalent in value to 10 shillings in the former currency.
The triangular prismatic honeycomb or triangular prismatic cellulation is a space-filling tessellation in Euclidean 3-space. It is composed entirely of triangular prisms.
A tetradecahedron is a polyhedron with 14 faces. There are numerous topologically distinct forms of a tetradecahedron, with many constructible entirely with regular polygon faces.
In geometry, the dodecagrammic antiprism is one in an infinite set of nonconvex antiprisms formed by triangle sides and two regular star polygon caps, in this case two dodecagrams.
In geometry, the dodecagrammic crossed-antiprism is one in an infinite set of nonconvex antiprisms formed by triangle sides and two regular star polygon caps, in this case two dodecagrams.
In the field of hyperbolic geometry, the hexagonal tiling honeycomb arises one of 11 regular paracompact honeycombs in 3-dimensional hyperbolic space. It is called paracompact because it has infinite cells. Each cell consists of a hexagonal tiling whose vertices lie on a horosphere: a flat plane in hyperbolic space that approaches a single ideal point at infinity.
In the field of hyperbolic geometry, the order-6 hexagonal tiling honeycomb is one of 11 regular paracompact honeycombs in 3-dimensional hyperbolic space. It is called paracompact because it has infinite cells. Each cell consists of a hexagonal tiling whose vertices lie on a horosphere: a flat plane in hyperbolic space that approaches a single ideal point at infinity.
The triangular tiling honeycomb is one of 11 paracompact regular space-filling tessellations in hyperbolic 3-space. It is called paracompact because it has infinite cells and vertex figures, with all vertices as ideal points at infinity. It has Schläfli symbol {3,6,3}, being composed of triangular tiling cells. Each edge of the honeycomb is surrounded by three cells, and each vertex is ideal with infinitely many cells meeting there. Its vertex figure is a hexagonal tiling.
