Subject: Point inside a triangle
Date: Wed, 19 Nov 1997 12:57:55 -0700
From: Irina Mikheeva

Hello, Alexandr!

Being highly impressed by the variety of puzzles at your site (I saved it in my bookmarks and intend to educate myself when my boss doesn't see me), I dare to ask you, if it is not a trouble. Is there any simple and beautiful theorem, that will allow me quickly prove whether a point lies within triangle or outside its boundaries. I have a feeling that something like this must exist. I am asking in one hope only that a person like you will probably know it at once.

Sincerely, Irina.

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