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
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