Octadecagon Octadecagon An octadecagon (or octakaidecagon) or 18-gon is an eighteen-sided polygon. A "regular octadecagon" has a Schläfli symbol {18} and can be constructed as a quasiregular truncated enneagon, t{9}, which alternates two types of edges. As 18 = 2 × 3, a regular octadecagon cannot be constructed using a compass and straightedge. However, it is constructible using neusis, or an angle trisection with a tomahawk. The following approximate construction is very similar to that of the enneagon, as an octadecagon can be constructed as a truncated enneagon. It is also feasible with exclusive use of compass and straightedge. The "regular
Both Sides other various B-sides that were released from the "Both Sides" sessions ("Take Me with You", "For a Friend") and a few cover songs that made it on other various albums. There has been discussion about a song called "Deep Water Town". It is from the "Both Sides" sessions and did not make the cut. It was never released or widely circulated amongst collectors. A very early "demo" of it was released on the official fanclub in 2011. In fact, this is more of an improvisation from which only a bit of the chorus will make it to the completed track.