Orsini Altarpiece of Christ's Passion on one side and two reverse panels on the other. When closed, it showed "Christ Bearing the Cross" with the now-lost Berlin panel on the reverse. Orsini Altarpiece The Orsini Altarpiece, Orsini Polyptych or Passion Polyptych is a painting produced at an unknown location by Simone Martini for private devotion by a cardinal of the Orsini family. Its precise date is still under discussion. It was taken to France very early in its lifespan and formed a major influence on late medieval French artists. It is now split between the Louvre, the Royal Museum of Fine Arts,
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.