Arch Basic

<!DOCTYPE HTML>
<html>
  <head>
  </head>
  <body>
        <canvas id="MyCanvas" width="600" height="300"></canvas>

        <script>
                var canvas = document.getElementById('MyCanvas');
                var context = canvas.getContext('2d');

        var radius = 75;
        var start = 4;
        var end = 3;
        var direc = false;

        context.beginPath();
        context.arc(150,150, radius, start, end, direc);
        context.lineWidth = 15;
        context.strokeStyle = "Green";
        context.stroke();
        </script>
  </body>
</html>