The diagonal of a rectangle is not a line of symmetry because it does not divide the rectangle into two congruent parts.
The diagonal of a rectangle is not a line of symmetry because it does not divide the rectangle into two congruent parts.
A line of symmetry is a line that divides a figure into two mirror-image halves. In a rectangle, the diagonal connects opposite corners and does not have any reflection or rotational symmetry.
For example, if you draw a diagonal line in a rectangle and fold the rectangle along the line, the two resulting shapes will not be congruent.
Therefore, the diagonal of a rectangle cannot be a line of symmetry.