Editorial

摘要

On the twelfth day of Christmas, my true love sent to me: 12 dodecagons, 11 hendecagons,10 decagons ." Although there are better gifts to receive, my challenge was to find examples of the first twelve regular polygons at home. This is trickier than you might imagine - can you identify the objects in Figure 1? Admittedly, most of the polygons are implicit and the 'monogon in a pear tree' is merely a degenerate point on a tacky decoration. I soon gave up on the original plan for an Advent calendar and knew in advance that seeking regular polyhedra with one to twelve faces would be futile!