Where can the lines containing the altitudes of a obtuse triangle intersect?

1 Answer
Feb 17, 2017

The lines containing the altitudes of a obtuse triangle intersect outside the triangle.

Explanation:

The point, at which the lines containing the altitudes of a obtuse triangle intersect called orthocenter, is always outside the triangle.

http://ceemrr.com/Geometry2/TriangleCenters/TriangleCenters5.html