An imaginary line or lines that can divide an animal into 2 or more equal halves is called as_____
Symmetry
An imaginary line or lines which can divide an animal into equal halves is called as symmetry. If the animal can be divided into 2 equal halves either in horizontal or vertical axis it is said to have bilateral symmetry and if the animal can be divided into more than 2 equal halves in three axes from posterior to anterior direction it is said to have radial symmetry.