Let's do this question how many altitude's does a triangle have?
OK.
So we have triangle ABC over here.
We have seen that as a triangle has three.
What is this?
You can draw three altitude's two, which are the three older dudes over here.
You can see these are the three older dudes, but let me name it as ID B and C, F eighty B and C of
the three altitude's.
Therefore the answer is option B..
Now what about the next question?
The D triangle always has all the dude outside itself.
OK, it has one older dude outside itself.
What type of triangle will have at least one hour to do it outside itself?
It seems obtuse.
Angle triangle.
You can see this angle over here is an obtuse angle, right?
That is, it's greater than 90 degrees.
Now if you drop and perpendicular to side B, C through it, it will be outside the triangle.
Right.
This it is outside the triangle.
Therefore, the answer to this question is the obtuse angle.
The triangle always has one or the two outside itself.