Irregular galaxies show no distinct feature or symmetry.
A galaxy that lacks a regular shape is called an irregular galaxy. Irregular galaxies do not have distinct spiral arms or a central bulge like spiral or elliptical galaxies. They often have a chaotic appearance with no clear structure.
This type of symmetry is called bilateral symmetry. It means that an animal's body can be divided into two equal halves along a single plane, typically the midline, resulting in mirror images.
They are simply called "galaxies which are part of a cluster".
Elliptical galaxies are sometime called dwarf galaxies.
They are called elliptical galaxies.
irregular galaxies
it would be called symmetry
A group of galaxies is called a cluster.
They are elliptical galaxies.
You can have dwarf elliptical galaxies.
That would be called symmetry
They are called Spiral Galaxies or Barred Galaxies.