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 of an Evening released on a Souvenir sampler, purchasable for a single dollar. Writing for Allmusic, music critic Bruce Eder wrote of the album "...the duo's most ambitious and mature record to date, but it just wasn't terribly exciting or of much interest (especially the second side) to the teenagers that made up the vast bulk of their audience." Production notes Both Sides of an Evening Both Sides Of An Evening was an album first released in 1961 by The Everly Brothers. Though it was released at the peak of their career, it failed to make any of the record charts. Fourteen songs