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 Long Has This Been Going On? How Long Has This Been Going On? "How Long Has This Been Going On?" is a song composed by George Gershwin, with lyrics by Ira Gershwin for the musical "Funny Face" in 1928. Replaced by "He Loves and She Loves" in "Funny Face", it was eventually introduced in the musical "Rosalie" (1928) by Bobbe Arnst as Mary O'Brien. The lyrics used as first released by Gershwin started with the refrain: "As a tot, when I trotted in little velvet panties,/ I was kissed by my sisters, my cousins, and my aunties./ Sad to tell, it was hell, an inferno worse