For an obtuse triangle, where is the altitude from one of the acute angle vertices located?

Perpendicular to an extended base line, outside the triangle

It is always one of the sides of the triangle

Which of the following statements correctly describes how the area formula $A = \frac{1}{2}bh$ is applied to different triangles?

The formula is the same, but the method for finding the height $h$ can vary.

A different formula is required for obtuse triangles.

The formula only applies to right triangles where the legs are the base and height.

The base $b$ must always be the shortest side of the triangle.