Keys 1, 2, 3, and 4 form a square, an equilateral triangle, a pentagon, and an octagon, in that order. The 0 key makes any shape you want, with an unlimited number of possible shapes. The space key should be pressed after each program ends in order to clear the pen marks and start at (0,0) again.
Created November 18, 2019
Last updated November 22, 2019
Published November 22, 2019