Description & Comments



The figure consists of one big circle and four small circles contained in it.
The radius of the small circles is half of the radius of the big circle.
The small circles are tangent to the big circles.
The figure has a rotational symmetry by \(90^\circ\) (rotating around the center of the big circle).

COMMENT: We suppose that the radius of the big circle is \(1\) because it is easy to rescale lengths and areas.