does the altitude of a triangle intersect the inside of a triangle?

Question

does the altitude of a triangle intersect the inside of a triangle?

Answer 1

The altitude of a triangle starts at a vertex and crosses the opposite side or a side extended at a right angle. Therefore, the answer to your question is it all depends.

 

 

Check out this link
At least one of the examples shows the altitude outside of the triangle. That's why I said it all depends.
https://www.google.com/search?q=altitude+of.a.triangle&client=ms-android-att-us&prmd=ivsn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjUjoHq-P7QAhXHSiYKHbOmDo8Q_AUIBygB&biw=360&bih=560#imgrc=hJHK-xzozWKe4M%3A