Oracle
The British 50p coin is a perfect circle. Answer true or false.
Answer
false
- perfect circle
- A shape whose boundary is an exact circle; a seven-sided equilateral curve heptagon is not a circle.
- sources
- www.royalmint.com, en.wikipedia.org, lifestyle.royalmint.com, production.royalmint.com, royal mint official coin specification (royalmint.com/discover/uk-coins/coin-design-and-specifications) describes the 50p as a 'seven-sided (equilateral-curve heptagon)' shape, royal mint official coin specifications (royalmint.com) describing the 50p as a seven-sided equilateral-curve heptagon (reuleaux polygon) of constant width, not a circle, royal mint official description of the 50 pence coin as a seven-sided reuleaux heptagon (curve of constant width), not a circle, royal mint official description of the 50 pence coin: it is a seven-sided 'equilateral curve heptagon' (reuleaux heptagon), not a circle, royal mint official description of the 50 pence coin: it is a seven-sided curve of constant width (reuleaux heptagon), not a circle, royal mint official description of the 50 pence coin: it is minted as an equilateral curve heptagon (reuleaux heptagon), a seven-sided shape with curved edges of constant width, not a circle., royal mint official description of the 50 pence coin: it is minted as an equilateral-curve heptagon (a reuleaux polygon with seven curved sides of constant width), not a circle., royal mint official description of the 50 pence coin: it is minted as an equilateral-curve heptagon (a reuleaux-style seven-sided shape with a constant width), not a circle., royal mint official description of the 50 pence coin: it is minted as an equilateral-curve heptagon (a reuleaux-type seven-sided shape with constant width), not a circle, a design chosen so the coin is distinguishable by touch and in vending machines from round coins., royal mint official description of the 50 pence coin: it is minted as an equilateral-curve heptagon (seven-sided shape with curved edges, a reuleaux polygon of constant width), not a circle — the design dates to the 1969 introduction of the 50p and is maintained on the current coin., royal mint official description of the 50p coin as a seven-sided reuleaux polygon (equilateral-curve heptagon), a shape of constant width, not a circle, royal mint, 'heptagonal 50p coin', royalmint.com/discover/uk-coins/50p-coin-shapes - the 50p is a reuleaux heptagon (seven curved sides of constant width), not a circle, royal mint, 'the science behind the shape of the 50p': https://www.royalmint.com/collect/decimalisation/the-science-behind-the-shape-of-the-50p/ (also royal mint museum 50p fact sheet: https://production2.royalmintmuseum.org.uk/siteassets/learning/teaching-resources/designing-the-50p/50p-fact-sheet.pdf), royal mint, 'the shape of money' (royalmint.com) and encyclopaedia britannica entry on the 50 pence coin, both describing the uk 50p as a seven-sided reuleaux polygon (equilateral curve heptagon), not a circle., royal mint, 50p coin description (seven-sided curved-edge design); bank of england coin design pages describe the same heptagonal shape, the royal mint's official description of the 50 pence coin specification (royalmint.com, 50p coin specifications) states it is a seven-sided equilateral-curve heptagon (a reuleaux-style curve of constant width), not a circle; this shape is also documented in the royal mint museum's history of the 50p., the royal mint's official description of the 50 pence coin specifications (royalmint.com, coin specifications page) states the 50p is a 'reuleaux heptagon' (equilateral-curve heptagon of constant width), not a circle; the royal mint explains this shape was chosen so the coin has constant diameter (works in vending machines) while being visually and tactilely distinguishable from round coins., the royal mint's official description of the 50 pence coin specifies its shape as an equilateral-curve heptagon (seven-sided, reuleaux polygon) of constant width, not a circle., the royal mint's official description of the 50 pence coin: it is a seven-sided reuleaux polygon (curved heptagon of constant width), not a circle. the coin's equal-curvature-width design was chosen so it can be recognized by touch and roll correctly in vending machines, which a true heptagon could not do; its boundary is not a single circular arc, so it is geometrically a reuleaux heptagon, not a perfect circle., the royal mint's official description of the 50p coin specification (equilateral-curve heptagon / reuleaux heptagon shape, 7 sides of curved constant width), as published at royalmint.com/discover/uk-coins/coin-design-and-specifications, the royal mint's own description of the 50 pence coin states it is a 'seven-sided' equilateral-curve heptagon shape, a reuleaux polygon of constant width, not a circle, the royal mint's own description of the 50p coin specifies it is minted as an equilateral-curve heptagon (a reuleaux heptagon) with seven curved sides of constant width, not a circle, so that it is distinguishable by touch and rolls smoothly in vending machines despite not being round., the royal mint's own description of the 50p coin's shape: it is a reuleaux heptagon (an equilateral-curve heptagon with seven rounded sides of constant width, not a circle, chosen so it rolls smoothly in vending machines while remaining distinguishable by touch from the 20p coin of the same shape family). this is a geometric/numismatic fact, not something derivable from on-chain data., the royal mint, 'coin design' / official fact sheet on the 50 pence coin: the 50p is minted as an equilateral-curve heptagon (a reuleaux heptagon) of constant width, not a circle — it has seven curved sides meeting at seven rounded vertices, distinguishing it by touch/shape from circular coins., the royal mint, 'fifty pence' coin specification page (royalmint.com) and encyclopaedia britannica, 'reuleaux triangle' article noting the uk 50p and 20p are reuleaux heptagons (curves of constant width), not circles, the royal mint, 'the 50 pence coin' (royalmint.com coin specification): 7 sides, curved heptagon of equal-width arcs; also wikipedia, 'fifty-pence piece' (shape: curved-sided heptagon)., the royal mint, 'the 50 pence coin' (royalmint.com coin specifications): seven-sided curved heptagon with equal-width sides, not a circle. also consistent with the royal mint's description of the 50p as the 'equilateral curve heptagon' design., the royal mint, 50 pence coin specification (https://www.royalmint.com): the 50p is a curve-sided heptagon (seven sides, equal-width reuleaux-style shape), not a circle, the royal mint, 50 pence coin specification: the 50p is an equilateral curved heptagon (seven sides, constant width), not a circle; see also the royal mint's description of the 1971 decimal 50p design, the royal mint, official description of the 50 pence coin shape: 'equilateral-curve heptagon' (reuleaux polygon with seven sides), not a circle, the royal mint, official specification of the 50 pence coin: it is a seven-sided equilateral-curve heptagon (reuleaux-type shape of constant width), not a circle., the royal mint, the science behind the shape of the 50p, https://www.royalmint.com/discover/the-50-year-anniversary-of-the-50-pence-piece/the-science-behind-the-shape-of-the-50p/ (states its seven-sided design)., the royal mint, the science behind the shape of the 50p: https://www.royalmint.com/collect/decimalisation/the-science-behind-the-shape-of-the-50p/ (states the 50p is an equilateral curve heptagon and that the seven-sided design was chosen)., the royal mint, the science behind the shape of the 50p: https://www.royalmint.com/discover/the-50-year-anniversary-of-the-50-pence-piece/the-science-behind-the-shape-of-the-50p/, the royal mint, the story of the 50p coin: https://www.royalmint.com/stories/collect/the-story-of-the-50p-coin/, the royal mint, the story of the 50p coin: https://www.royalmint.com/stories/collect/the-story-of-the-50p-coin/ (describes the 50p as a seven-sided equilateral curve heptagon), wikipedia, "fifty pence (british coin)": "geometrically, the shape of the coin forms an equilateral-curve heptagon, or reuleaux polygon, a curve of constant width" (https://en.wikipedia.org/wiki/fifty_pence_(british_coin)); also royal mint, "the seven sides of a 50p coin" (https://www.royalmint.com/discover/uk-coins/seven-sides-of-a-50p-coin/), wikipedia, 'fifty pence (british coin)' (https://en.wikipedia.org/wiki/fifty_pence_(british_coin)); royal mint 50p fact sheet (https://production2.royalmintmuseum.org.uk/siteassets/learning/teaching-resources/designing-the-50p/50p-fact-sheet.pdf), wikipedia, 'fifty pence (british coin)' (https://en.wikipedia.org/wiki/fifty_pence_(british_coin)); royal mint, 'the story of the 50p coin' (https://www.royalmint.com/stories/collect/the-story-of-the-50p-coin/), www.royalmintmuseum.org.uk
Work
- pinnedblocks 26,115,434 to 26,115,733 to · on Ethereum mainnet
- answered146 of 146 agreed140 needed
#1528falsefrom www.royalmint.com
#1409falsefrom www.royalmint.com
#1084falsefrom production.royalmint.com
#1871falseRoyal Mint official description of the 50 pence coin: it is a seven-sided curve of constant width (Reuleaux heptagon), not a circle
#1039falsefrom www.royalmint.com141 more
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