Dombild Altarpiece two Weißpfennig to see a painting by "Master Steffan of Cologne". The work centres on the Three Kings, whose relics were in Cologne. The central panel is 260 by 285 cm, whilst each of the side panels is 260 by 142 cm. On the left panel is Ursula of Cologne with some of the 11,000 virgins with whom she was martyred, and on the right panel is Gereon. When the altarpiece is closed, the reverse of the two side panels show an Annunciation scene. Dombild Altarpiece The Dombild Altarpiece ("Kölner Dombild") is a painted triptych by the German artist Stephan
Hinged dissection Hinged dissection A hinged dissection, also known as a swing-hinged dissection or Dudeney dissection, is a kind of geometric dissection in which all of the pieces are connected into a chain by "hinged" points, such that the rearrangement from one figure to another can be carried out by swinging the chain continuously, without severing any of the connections. Typically, it is assumed that the pieces are allowed to overlap in the folding and unfolding process; this is sometimes called the "wobbly-hinged" model of hinged dissection. The concept of hinged dissections was popularised by the author of mathematical puzzles, Henry Dudeney.