Bezier curves - a primer

Bezier curves - a primer: Before we begin I'd like to say that all the graphics on the page, except for the Wolfram Alpha images, are interactive graphics, without requiring any special browser plugins. If your browser supports javascript, and the canvas element (sorry IE8 users, you'll have to upgrade to IE9, which supports - Get it here,) it will be able to let you use this page, thanks to the most excellent Processing.js project. You will also see rather nicely typeset mathematics, thanks to the equally excellent MathJax library.