On: Animation to Explain CSS Triangles

[lambda]

Got it from here: http://apps.eky.hk/css-triangle-generator/

Here's a series of examples showing how it works (not a fun animation like the OP, but a little easier to follow): http://jsfiddle.net/X8gXS/

Basically, you can get any triangle as long as at least one of the sides is horizontal or vertical.

[jack-r-abbit → lambda]

Ah... I see it now. Thanks.