WHAT IS DIFFERENCE BETWEEN SYMMETRY AND MIRROR LINE
Dear student
If you can reflect (or flip) a figure over a line and the figure appears unchanged, then the figure has reflection symmetry or line symmetry. The line that you reflect over is called the line of symmetry. A line of symmetry divides a figure into two mirror-image halves.

The Line of Symmetry (also called the Mirror Line) can be in any direction.
But there are four common directions, and they are named for the line they make on the standard XY graph.

Regards
If you can reflect (or flip) a figure over a line and the figure appears unchanged, then the figure has reflection symmetry or line symmetry. The line that you reflect over is called the line of symmetry. A line of symmetry divides a figure into two mirror-image halves.

The Line of Symmetry (also called the Mirror Line) can be in any direction.
But there are four common directions, and they are named for the line they make on the standard XY graph.

Regards