The intersection of three altitudes of a triangle is called the orthocenter, while altitude is the line drawn from one of the vertex of a triangle and extends it in such a way that it cuts perpendicularly the opposite side of the same triangle.
<span> For obtuse triangle, the orthocenter always lies outside of the triangle. So option “C” is correct. </span>
<span>An image of obtuse triangle along with orthocenter is attached herewith.</span>
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