The figure shows a circle and four circular arcs inside it.
The endpoints of the arcs are on the circle.
The end point of an arc is the starting point for another arc.
The radius of the arcs is the same as the one of the circle.
The figure has a rotational symmetry of \(90^\circ\) at the center of the square.
COMMENT: We suppose that the radius of the circle is \(1\) because it is easy to rescale lengths and areas.