What is the Difference Between Altitude and Median?

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The difference between altitude and median lies in their geometric properties and the way they are defined within a triangle:

  • Altitude: An altitude is a perpendicular line segment drawn from a vertex of a triangle to the opposite side. It helps find the height of the triangle and may or may not divide the opposite side into two equal parts.
  • Median: A median is a line segment drawn from a vertex of the triangle to the midpoint of the opposite side. It divides the opposite side into two equal parts.

In summary, an altitude is perpendicular to the opposite side and may or may not divide it into two equal parts, while a median is drawn from a vertex to the midpoint of the opposite side and always divides it into two equal parts.

Comparative Table: Altitude vs Median

The difference between altitude and median in the context of a triangle can be summarized as follows:

Feature Median Altitude
Definition A median is a line segment connecting a vertex to the midpoint of the opposite side. An altitude is a line segment connecting a vertex to the opposite side, perpendicular to it.
Purpose Medians help to divide the opposite side into two equal parts or halves. Altitudes help to make 90° with the opposite side, i.e., be perpendicular to it.
Relationship A median can also be an altitude in special cases, such as equilateral and isosceles triangles. An altitude can never be a median, as it always makes a 90° angle with the opposite side.

In summary, a median is drawn from a vertex of the triangle to the midpoint of the opposite side, while an altitude is drawn from a vertex of the triangle to the opposite side being perpendicular to it.