20 Sided Icosagon
The icosagon is a twenty-sided polygon. A popular example of the 20 Sided Icosagon is the Showcase Showdown wheel on the TV game show The Price Is Right. The big wheel has 20 numbers in multiples of 5: 5,10,15,20,25, 30 etc to 100. Visit wikipedia.org icosagon (geometry) for more detailed information about the icosagon shape.