Answer:

A line of symmetry, of a two-dimensional shape is a line such that when a mirror is placed on it one half of the shape reflects to the other half. Shapes can have various numbers of lines of symmetry.

If a shape has one or more lines of symmetry, it is said to have line symmetry. When a shape has only on line of symmetry, it is said to have bilateral symmetry.

Example of Line of Symmetry :



The above rectangle has two lines of symmetry.