Henri Picciotto sent me images from two programs producing spiral approximations and was wondering about comparisons to r=a*[math]\theta[/math][math][/math][math][/math] and r=a*b^[math]\theta[/math]. So I had to compare them! Lots for me to figure out here.[br][br]In both varieties, the angle between segments is constant. In plus, each segment is a constant amount longer than the previous, in times, each is a constant multiple of the previous.