Consider the letters of English alphabet A to Z. List among them the letters which have two lines of symmetry.
Symmetry: The dotted line divides the figure into two identical parts. When the figure is folded about this line the two parts fir exactly over each other. Such a figure is said to be Symmetrical.
Axis of Symmetry: The line that divides the figure into two identical parts is called Axis of Symmetry.
Vertical Line of Symmetry: The axis of the shape which divides the shape into two identical halves, vertically, is called a vertical line of symmetry.
Horizontal Line of Symmetry :The symmetry line or horizontal axis of a shape which divides the shape into two identical halves is known as horizontal line of symmetry.
Thus the alphabets which are having both symmetry or two lines of symmetry are H,I,O,X,