Description & Comments



The figure consists of one large circle and four smaller circles contained in it. The radius of the smaller circles is equal to half of the bigger circle. The small circles are pairwise tangent and their centers are aligned. The two segments obtained by connecting the centers of two tangent circles intersect in the center of the big circle and are perpendicular.
COMMENT: We suppose that the radius of the circle is \(1\) because it is easy to rescale lengths and areas.