Which letter in the word HAPPY has an order of 2 rotational symmetry?
Rotational symmetry is the symmetry wherein the figure looks exactly the same if you rotate it about any fixed point.
A figure has symmetry if it can be divided into two identical pieces.
If you turn or rotate a figure about a point P, if it will still look the same from all directions, this kind of symmetry is called rotational symmetry.
The order of rotational symmetry of the letter H is 2.