MB-Point+in+Triangle

=** Michael Borcherds - Point in Triangle? aaaaaaaaaaaa ** MB-Home=

Directions:
 * Click and drag any of the vertices A, B or C of the triangle.
 * Click and drag the red point P. Notice that it turns black when it is outside the triangle.
 * While P is inside the triangle, the angles add up to 360°.
 * When P goes outside the triangle, the angles do not add up to 360°.

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Source: http://www.blackpawn.com/texts/pointinpoly/default.html