Common term is an oval
Mathematical is an ellipse
An ellipse.
it is shaped roughly like a bell... a bell curve.
When the moon is shaped like a ball it is called a full moon.
A closed curve is a continuous curve in a plane that begins and ends at the same point, forming a complete loop without any breaks or gaps. Examples of closed curves include circles, ellipses, and polygons like triangles and squares. Unlike open curves, which have distinct starting and ending points, closed curves enclose a finite area. They are fundamental in geometry and topology, serving as the basis for various mathematical concepts.
It is a ring like object. The ring of a circus for example. Your definition would be a closed plane curve, consisting of all points from a given distance from a point within it, called the centre
That shape is called an 'oval' or an 'ellipse'.
An ellipse.
Yes it could.An ellipse is a specific shape with a mathematical formula and certain qualities (like the distance from one focus to the edge of the ellipse to the other focus is constant).An oval is not so precisely defined but is a closed curve.
it is shaped roughly like a bell... a bell curve.
yes
An ellipse is a closed curve that is elongated.
A closed semi-circle.
eclipse
A horseshoe bend is a curve in a river that is shaped like the letter "U".
When the moon is shaped like a ball it is called a full moon.
Aa closed conic section shaped like a flattened circle
a yellow sign with an arrow shaped like an S