<!DOCTYPE html>
<html lang="es">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Canvas - Escuadra</title>
<style>
body{
display: flex;
justify-content: center;
}
</style>
</head>
<body>
<canvas width="400" height="400"></canvas>
<script>
const canvas = document.querySelector('canvas');
const ctx = canvas.getContext('2d');
ctx.beginPath();
ctx.moveTo(50,50);
ctx.lineTo(50,400);
ctx.lineTo(400,400);
ctx.fill();
ctx.beginPath();
ctx.fillStyle = 'white';
ctx.moveTo(100, 175);
ctx.lineTo(100, 350);
ctx.lineTo(275, 350);
ctx.fill();
</script>
</body>
</html>
