Does the line divide the picture into symmetric halves?
1) Line of symmetry is a line that divides the figure into two parts, which are mirror images of each other. 2) The line in the picture does not divide the picture into two parts, which are mirror images of each other, since the tree on the left side of the line is smaller than the tree on the right side of the line. 3) So, the line in the picture is not a line of symmetry.