Home / All Definitions / Geometry / Altitude of a Triangle Definition

The altitude or height of a triangle is the distance between a vertex of a triangle and the opposite side. It is the shortest line segment between a vertex of a triangle and the (possibly extended) opposite side. Altitude can also be used to refer to the specific length of this segment. Notably, the three altitudes of a triangle are concurrent, intersecting at the orthocenter. The altitude of a triangle is illustrated in the diagram below.

“Altitude of a Triangle.” Mathwords, www.mathwords.com/a/altitude_triangle.htm.

Check out our free app for iOS & Android.

For more information about our app visit here!

Add Math Converse as app to your home screen.

Check out our free desktop application for macOS, Windows & Linux.

For more information about our desktop application visit here!

Check out our free browser extension for Chrome, Firefox, Edge, Safari, & Opera.

For more information about our browser extension visit here!

Placeholder

Placeholder