Alternately, you may propose something similar using turtle graphics.
to star :points repeat 20 [forward 200 right product 2 quotient 360 :points] end
Get this procedure to work for many different inputs, including 6, 10 and 50. The complete solution involves number theory, but you can come up with partial solutions by, for example writing a separate procedure for six pointed stars. For full credit, the turtle should finish at its starting point with its original facing.