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
How Many Drinks? 2013. It has since peaked at #69 on the week of July 20, 2013, and spent a total of 20 weeks on the chart. How Many Drinks? "How Many Drinks?" is a song by American recording artist Miguel, taken from his critically acclaimed second studio album, "Kaleidoscope Dream". The song was produced by Salaam Remi. A remixed single featuring Kendrick Lamar on an added third verse was released as the album's third single on March 3, 2013. It received a nomination for Best R&B Performance at the 56th Grammy Awards held in January 2014. The music video, directed by Clark