It makes it easier to stir the contents.
A wedge shaped portion of a circle is called a sector.
A circle has to be ring shaped (starting and finishing at the same point) otherwise it isn't a circle.
Did you know that the sun is circle shaped?
Saucepans are related to Llanelli because Llanelli was historically known for its tinplate industry, which produced items like saucepans. The town was a hub for metal industry, hence the association with the production of saucepans.
None, but we have a couple square-shaped.
"Circular", meaning shaped like a circle.
There are various reasons that manholes are shaped like a circle. For example, it is much easier to dig a circular hole.
a "Flat circle thing that's flat" ;)
it was a circle
sector
sliver
a tinker