<canvas width="600" height="400"></canvas>
<script>
var tela = document.querySelector("canvas");
var pincel = tela.getContext('2d');
pincel.fillStyle = 'green';
pincel.fillRect(14.29, 0, 571.43, 400);
pincel.fillStyle = 'yellow';
pincel.beginPath();
pincel.moveTo(62.86, 200);
pincel.lineTo(62.86, 200);
pincel.lineTo(300, 48.57);
pincel.lineTo(537.15, 200);
pincel.lineTo(300, 351.43);
pincel.fill();
pincel.fillStyle = 'darkblue';
pincel.beginPath();
pincel.arc(300, 200, 100, 0, 2*3.14);
pincel.fill();
</script>
