The altitude of a triangle is the perpendicular line segment drawn from a vertex to the opposite side of the triangle. It is used to calculate the area of a triangle, as the area is half the product of the base and the height. The altitude is always perpendicular to the base or the opposite side, forming a right-angled triangle. There can be a maximum of three altitudes for a triangle, and they can lie inside or outside the triangle, depending on the type of triangle
. In summary, the altitude of a triangle is a fundamental concept in geometry, representing the height of the triangle and playing a crucial role in the calculation of its area.
