#11-vert-2 : Without a little clarification, this involves wild guessing...

This pull request is points out that 'triangle' shape doesn't have sneaky extra vertices - unless that's part of the question, you're really asking people to either (i) guess and cross-fingers; or (ii) visually match potentially infinitely complex functions...

Perhaps the hint is too generous, but unless you state that there are only 3 vertices to deal with (and not one at the 'origin' in the middle of the base of the triangle, for instance), the problem is insanely hard.

HTH
Martin
:-)

PS: If you'd like me to fix up some of the outstanding 'issues' too, could you make me a 'contributor', since I can't currently close someone else's issue.