<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\02234";
}
</style>
</head>
<body>
<p>Therefore using Hexa Decimal: ∴</p>
<p>Therefore using HTML Code: ∴</p>
<p>Therefore using HTML Entity: ∴</p>
<p id="point">Therefore using CSS Entity: </p>
</body>
</html>