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 More Years songwriting for both sides of the record was originally credited to Carl Germany, who was a disc jockey and dance promoter in Chicago. The Chess label occasionally used composer credits on their records to repay favors to local businessmen who had helped their record sales. Later reissues of the recordings have given the songwriting credits to Chester Burnett. Following the record's success, Burnett moved to Chicago in 1953, and developed his career further in clubs and through recordings there, with a new band. Writer Robert Palmer has cited Willie Johnson's electric guitar work on the track as the first use