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 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