ABSTRACT
To create the simplest star, the n = 5, J = 2 pentagram using the ESA files, you start at the top then draw a line from 0 (the top) to the second vertex ( 2 in the lower right), then to the 4 th vertex, and so on. The rule is to add 2 and draw the next line. But the third line has an end that is 2 more than 4 or 6 … but there are only five vertices in the n = 5 gon. It is natural to put the end of the third line at vertex 1 (since it is 1 after 5, the top of the 5-gon).
