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 Long Has This Been Going On? this been going on?" Many recordings omit the first verse; Louis Armstrong's instead omits the second, which more strongly presupposes a female singer. 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