<!DOCTYPE HTML>
<html>
<head>
<style>
body
{
margin: 0px;
padding: 0px;
}
#myCanvas
{
border: 1px solid #9C9898;
}
</style>
<script>
window.onload = function ()
{
var canvas = document.getElementById("myCanvas");
var context = canvas.getContext("2d");
// set line width for all lines
context.lineWidth = 25;
// miter line join (left)
context.beginline Join();
context.moveTo(99, 150);
context.lineTo(149, 50);
context.lineTo(199, 150);
context.lineJoin = "miter";
context.strokeStyle = "red";
context.stroke();
// round line join (middle)
context.beginline Join();
context.moveTo(239, 150);
context.lineTo(289, 50);
context.lineTo(339, 150);
context.lineJoin = "round";
context.strokeStyle = "blue";
context.stroke();
// bevel line join (right)
context.beginline Join();
context.moveTo(379, 150);
context.lineTo(429, 50);
context.lineTo(479, 150);
context.lineJoin = "bevel";
context.strokeStyle = "orange";
context.stroke();
};
</script>
</head>
<body>
<canvas id="myCanvas" width="578" height="200"></canvas>
</body>
</html>
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