Question

what is an altitude of a triangle

Answer 1

Hey mate ... Here is your answer ..

An altitude is the perpendicular segment from a vertex to its opposite side. In geometry, an altitude of a triangle is a straight linethrough a vertex and perpendicular to (i.e. forming a right angle with) a line containing the base (the opposite side of the triangle). This line containing the opposite side is called the extended base of the altitude. 

Hope u understand .

Answer 2

In geometry, an altitude of a triangle is a line segment through a vertex and perpendicular to (i.e., forming a right angle with) a line containing the base (the side opposite the vertex). This line containing the opposite side is called the extended base of the altitude.