A circle has two lines of symmetry say true or false.
The circle has infinite lines of symmetry.
The imaginary line or axis along which you can fold a figure to obtain the symmetrical halves is called the line of symmetry. It is also termed as the axis of symmetry. The line symmetry is also called a mirror line because it presents two reflections of an image that coincide.
Some figures have not one or two, but infinite lines passing through the centre, and the figure is still symmetrical. Example: a circle.