I believe that the distance around a circle is called the circumference.
The distance around the outside of a circle is called the Circumference.
10 sided shapes are known as decagons.
Rhombus , Square , Kite , Quadrangle As you can see quad means four, so that's why they call it quadrangle.
A 230-gon. Luckily people gave up on naming particular sided shapes around the time you get to 20 sides. The convention after that is just to state the number of sides, and stick "gon" on the end.
Perimeter
I believe that the distance around a circle is called the circumference.
parameter
The perimeter.
It is the circumference.
The boundary of an area is its perimeter.
The distance around the outside of a circle is called the Circumference.
It is called the perimeter.
Convergence Boundary.
A divergent plate boundary.
A convergent plate boundary.
You would call the group of shapes which has at least one line of symmetry symmetrical shapes. Stars, circles, and rectangles are considered symmetrical shapes.