getElement('root');
  var graphics = goog.graphics.createGraphics(800, 600);

  var blueFill = new goog.graphics.SolidFill('blue');
  var blackStroke = new goog.graphics.Stroke(1, 'black');
  graphics.drawPath(
      regularNGon($coord(20, 50), $coord(0, 20), 3),
      blackStroke, blueFill);
  graphics.drawPath(
      regularNGon($coord(120, 50), $coord(100, 20), 4),
      blackStroke, blueFill);
  graphics.drawPath(
      regularNGon($coord(220, 50), $coord(200, 20), 5),
      blackStroke, blueFill);
  gr