<script src="http://spelprogrammering.nu/simple.js">
function start()
{
  math.axes();
  math.polarPoint(pi/4,   1, 4,  "black",   "pi/4");
  math.polarPoint(pi/2,   1, 5,  "blue",    "pi/2");
  math.polarPoint(3*pi/4, 1, 6,  "green",   "3pi/4");
  math.polarPoint(pi,     1, 7,  "red",     "pi");
  math.polarPoint(5*pi/4, 1, 8,  "brown",   "5pi/4");
  math.polarPoint(7*pi/4, 1, 9,  "gray",    "7pi/4");
  math.polarPoint(3*pi/2, 1, 10, "magenta", "3pi/2");
  math.polarPoint(2*pi,   1, 11, "cyan",    "2pi");
}
</script>