Octadecagon and 2{9/4} or two enneagrams, {18/6} is reduced to 6{3} or 6 equilateral triangles, and finally {18/9} is reduced to 9{2} as nine digons. Deeper truncations of the regular enneagon and enneagrams can produce isogonal (vertex-transitive) intermediate octadecagram forms with equally spaced vertices and two edge lengths. Other truncations form double coverings: t{9/8}={18/8}=2{9/4}, t{9/4}={18/4}=2{9/2}, t{9/2}={18/2}=2{9}. The regular octadecagon is the Petrie polygon for a number of higher-dimensional polytopes, shown in these skew orthogonal projections from Coxeter planes: 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
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.