How do I make a half-triangle in Source? I've been playing around in steam for a while, can't get it! I want to make it like "^" or something similar. Not found a tutorial yet that'll tell me. :S Sorry if this is so easy and I'm making myself look stupid.
Edit: Found a tutorial, nevermind. Won't let me delete topic, though. http://www.iwannamap.com/viewtutorial.php?tut=29213