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 Licks? remaining on the chart for 20 weeks. "How Many Licks?" also charted in several other countries. It peaked at number six on the Dutch Top 40 chart, and remained on the chart for 13 weeks. The single reached number seven on the Ultratop chart in the Flanders region of Belgium, also remaining on that chart for 13 weeks. It further peaked at number 58 on the German Singles Chart, remaining for eight editions. The song's music video, directed by Francis Lawrence, was shot in the Sylmar, Los Angeles neighborhood of Los Angeles on October 3 and 4, 2000, and premiered