What is the mirror line?

The mirror line, also known as the line of symmetry, is an imaginary line that divides a shape or object into two equal halves that are mirror images of each other. When a shape is reflected across the mirror line, the two halves coincide perfectly. This concept is commonly used in geometry, art, and design to create balanced and aesthetically pleasing compositions. In mathematics, identifying mirror lines helps in understanding symmetry in various figures.