The capital letters "H," "I," "N," "O," "X," and "Z" have point symmetry. The letters "H," "I," "O" and "X" have both point and line symmetry.
Point symmetry is also referred to as "rotational symmetry of order 2" or "origin symmetry." The midpoint of a geometric shape, also called the "origin," is where the object forms its symmetry. Point symmetry occurs when every part of an object has a corresponding part that is of uniform distance from the origin and lies in the reverse direction. A figure is said to have a line symmetry when it can be divided into two equal halves, where one portion mirrors the other.