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## Fifty pence (British coin)

en.wikipedia.org/wiki/Fifty_pence_(British_coin)

The British decimal fifty pence (50p) coin – often pronounced fifty pee – is a unit of currency equaling one half of a pound sterling. It is a seven-sided coin formed as an equilateral c...

## Seven sides of a 50p coin | The Royal Mint

www.royalmint.com/discover/uk-coins/seven-sides-of-a-50p-coin

Since the introduction of the 50p coin in 1969 it has become one of the most ... It was the world's first seven-sided coin, in the shape of an equilateral curve heptagon. ... to be the best for distinguishing the coin from the rest of the UK coinage.

## An Alphabet of Heptagons: Seven-sided Coins - World of Coins

www.worldofcoins.eu/forum/index.php?topic=9903.0

The first heptagonal coin was created by the Royal Mint (UK). It was a British 50 pence coin, first issued in 1969. In this topic, I will give priority ...

## Why are the British fifty and twenty pence coins heptagons - Answers

The British 50 and 20 Pence coins are both heptagonal to assist with the visual identification of the coin and, as an aid to the sight impaired as a tactile means of  ...

## 2D Polygon Shapes - Facts about Pentagons, Hexagons, Octagons ...

www.kidsmathgamesonline.com/facts/geometry/2dpolygonshapes.html

Enjoy learning about 2D polygon shapes with our range of interesting facts. ... The British 50 and 20 pence coins are curved heptagons. An octagon is an 8 ...

## How round is your money? - Maths Careers

www.mathscareers.org.uk/article/round-money/

The British 50p coin, like the 20p coin, has a rather unusual shape. It is an equilaterally curved heptagon. That is, it has seven equal sides, all of which are ...

## Grand Illusions - Articles - Solids of Constant Width

www.grand-illusions.com/articles/solids_of_constant_width/

Most UK coins are circular, but two coins are seven-sided, the 50 pence coin ( shown ... In fact the coin is an equilaterally curved heptagon, or Reuleaux polygon ...

## Monthly Maths Maths - MEI

www.mei.org.uk/files/pdf/mm/april-2014.pdf

down. UK 50 and 20 pence coins are not regular heptagons, since each of the seven sides is curved not flat. These coins are regular curvilinear heptagons,.

## On This Day: First 50p coins cause instant confusion - Yahoo!

uk.news.yahoo.com/on-this-day--first-50p-coins-cause-instant-confusion-160430607.html

Oct 11, 2013 ... The new heptagonal coin replaced the 10-shilling note – although would be used ... [On This Day: Decimal currency introduced across Britain].

## Fifty Pence Coins - A Brief History of the 50 Pence ... - 24Carat.co.uk

24carat.co.uk/fiftypencestory.html

The last coins of the old £sd system to be issued for circulation were dated 1967, and the first decimal ... 2,000 years previously on Roman coins of Hadrian, and she had appeared regularly on British coins for ... Equilateral Curve Heptagon

### What shape is a 20 pence piece? | matheminutes

matheminutes.blogspot.com

Dec 28, 2011 ... All but two UK coins are circular. The 20p and 50p pieces are ... This would indicate that it might be a regular heptagon. However, these edges ...