I believe your are talking about a 3D figure called a Mobius strip. It is a strip of paper that has a half-turn in it that causes technically a one sided figure.
A piece of wire twisted to form a circle is commonly referred to as a wire loop or wire ring. This simple shape can be utilized in various applications, such as jewelry making, crafting, or as a component in mechanical assemblies. The twisted design can enhance its structural integrity and aesthetic appeal, depending on the thickness and type of wire used.
A 3D semi circle
a sphere?
circumference
A piece of an edge of a circle is called an ARC.
A twisted pantyhoe.
We call it a "semi-circle"
twirled, spin, move in a circle.
A semi-circle
Concentric Circles?
A piece of wire twisted to form a circle is commonly referred to as a wire loop or wire ring. This simple shape can be utilized in various applications, such as jewelry making, crafting, or as a component in mechanical assemblies. The twisted design can enhance its structural integrity and aesthetic appeal, depending on the thickness and type of wire used.
We call it a circle.
The Twisted blade that helps a plane fly and a ship move is call a propeller.
square, circle, triangle, twisted triangle, pentagon, twisted pentagon, brick, wall, twist, corkscrew, quad, tornado, cobra, twisted cobra, butterfly, staircase, diamond braid, zipper, fishy pull, candy stripe
A circle with three dimensions is sphere.
a semi circle? common sense
Inscribed