SOLUTION: Why is the altitude of the triangle on te outside of the triangle?

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Question 502464: Why is the altitude of the triangle on te outside of the triangle?
Answer by MathLover1(20849) About Me  (Show Source):
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The altitude of a triangle is a line segment from one vertex of a triangle to the opposite side so that the line segment is PERPENDICULAR to the side.
the altitude of a triangle can fall outside because in this case we have an obtuse triangle (which have exactly one obtuse angle)