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
B-Sides and Rarities (Beach House album) B-Sides and Rarities (Beach House album) B-Sides and Rarities is a compilation album by American dream pop band Beach House, released on June 30, 2017 through Sub Pop, Bella Union and Mistletone. The compilation contains B-sides and rare, unreleased cuts along with two new songs, "Chariot" and "Baseball Diamond". It also includes the band's cover of Queen's "Play the Game". The idea for a B-sides record came when the band realized how many non-album songs had been made over the years, and how hard it was to find and hear many of them. This compilation contains every song the band