<canvas width="600" height="400"></canvas>
<script>
var lienzo = document.querySelector("canvas");
var pincel = lienzo.getContext("2d");
pincel.fillStyle = "#33CAFF";
pincel.fillRect(0,0,600,400);
pincel.fillStyle = "pink";
pincel.beginPath();
pincel.moveTo(50, 50);
pincel.lineTo(400, 400);
pincel.lineTo(50, 400);
pincel.fill();
pincel.fillStyle = "#FF339F";
pincel.beginPath();
pincel.moveTo(100, 175);
pincel.lineTo(275, 350);
pincel.lineTo(100, 350);
pincel.fill();
</script>
