A line of symmetry divides a figure into two congruent (the same) parts each of which is the mirror image of the other. Look at these images below to see how both sides look the same

A line that splits a shape into two parts, that are the same size and the same shape, is called a line of symmetry

We see lines of symmetry in letters, shapes, and in nature

Not all objects have a line of symmetry.

One side of these objects does not exactly match the other side so they do not have a line of symmetry

Some objects have more than one line of symmetry.