Complete the figure such that the figure has exactly two lines of symmetry.
We want to complete it so that we get a figure with two lines of symmetry. Let the two lines of symmetry be horizontal line (x-axis) and vertical line (y-axis).
Draw a figure so that it is a mirror image of the horizontal line.
Draw a figure so that it is a mirror image of the previous figure in the vertical line.
Hence, the completed figure is