Bentivoglio Altarpiece Bentivoglio Altarpiece The Bentivoglio Altarpiece is a painting by the Italian Renaissance painter Lorenzo Costa the Elder, dating to August 1488. It is displayed in the Bentivoglio Chapel of the church of San Giacomo Maggiore, Bologna, Italy. It was commissioned by Giovanni II Bentivoglio, lord of Bologna, as a thanksgiving for the family’s escape from an attempted massacre by the Malvezzi family . The painting is a large canvas, executed by Costa together with other two works on the chapel's walls, the "Triumph of Fame" and the "Triumph of Death". It features, above a sumptuous Renaissance architecture, a marble altar
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.