Theory:
In a few cases, there can be two or more lines of symmetry.
Consider the following figure:
The final figure will look like this:
A square has four equal sides. So it is a regular polygon.
A square has \(4\) lines of symmetry.
In case of regular polygons, the number of lines of symmetry equals the number of sides.
A polygon:
If three or more line segments form a closed surface, then it is a polygon. The line segment can be of any length.
If three or more line segments of equal length form a closed surface, then it is called a regular polygon. Equilateral triangle, square, pentagon and hexagon are a few examples of regular polygon.
Let us look at a few more examples.
Shape | Number of sides | Lines of symmetry | Final figure |
 | \(3\) |  |  |
 | \(5\) |  |  |
 | \(6\) |  |  |