> Suppose I have a triangle with corners A, B and C. Suppose, further,
> that I have a line that passes through P and Q.
>
> Now... how do I figure out whether these two objects intersect each
> other? (I don't care *where* they intersect, only *if*.)


Tim's solution is most likely the best, but if you're looking for a quick
solution and you're not worried about speed, then you might just want to
#declare a triangle and trace() a ray towards it.

 - Slime
 [ http://www.slimeland.com/ ]

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