Yes, it can.
No.
you have to multiply the length by volume then divide by how many ever sides you have,if that happen not to make sense.sorry haa
No.
No
It doesn't ever fall outside of a triangle.
No.
never
Conventionally a triangle's height is given as the perpendicular distance to the apex above an arbitarily defined base. Without such a definition, the formula for the area of a triangle, 0.5 x base x perpendicular HEIGHT, would have no meaning. However, a single height measurement given in isolation does not define any particular triangle as that alone can be found in an infinate number of triangles.
you have to multiply the length by volume then divide by how many ever sides you have,if that happen not to make sense.sorry haa
no
Sure. If one of the base angles is more than 90 degrees, then the altitude (height) is outside the triangle. Yes. This only occurs with an obtuse triangle. Because an altitude is a line drawn from a vertex to the opposite side and is perpendicular with that opposite side, it can only occur if it is outside the triangle. Look at the triangle in related links. If you look at the vertex on the top, the only way to draw the altitude would be to draw outside the triangle.
The question doesn't quite make sense as stated. A regular nonagon has nine sides and each side has a unique perpendicular bisector - there are 9. A regular n-gon has n perpendicular bisectors of sides, if n is odd. If n is even, then there are only n/2 since opposite sides share the same perpendicular bisector.
No
No.
Yes.
No
It doesn't ever fall outside of a triangle.