### 3. Will an altitude always lie in the interior of a triangle? If you think that this need not be true, draw a rough sketch to show such a case.

No, an altitude of a triangle will not always lie in the interior of the triangle. This is especially true for obtuse triangles.

In an obtuse triangle, one angle is greater than 90 degrees. When you draw an altitude from the vertex of the obtuse angle, it will fall outside the triangle.

Here's a Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.