A shape is said to have a line symmetry when one half of it is the mirror image of the other half. True or false.
True
A mirror line helps to visualise a line of symmetry, a shape has a line of symmetry when half of it is the mirror image of the other half. But it is not applicable in the case of left-right changes in the orientation.
eg. R | Я
When the folded part sits perfectly on top (all edges matching), then the fold line is a Line of Symmetry.