The surface of a sphere is a good example, as is a torus (the mathematical name for the shape of the surface of a quoit , or a ring-shaped doughnut).
In the old days, games could go on until after midnight - what with the drinking and that - and we had to light matches to show players where to land the quoit .
If you looked at our itinerary you'd think we were bouncing from quoit to holy well to stone circle and you wouldn't be far wrong.
It uses rubber rings and to make up for their lack of shape, one side is coloured black, the other white and any quoit which falls black side up, doesn't score.
With one quoit bead or pendant from Varley Halls in Sussex, analysed by the British Museum, a combination of glazing techniques was used.
A whole day of sponsored games, including skipping, soccer skills, rugby touch-downs and quoit balancing, helped to raise £520.
The difficulty of maintaining the clay squares and the muddiness that can occur on a wet day makes genuine traditional quoits a rare sport.
Organisers are also looking for community organisations to run antiquated fair games such a quoits and bob-the-apple to add to the atmosphere of the day.
Deck Quoits played with quoits made from rope has been a popular pastime on cruise ships for decades.
Is this a single hole version of the above game or is it a variation of quoits with a hole instead of a stake?