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Altitude of a Triangle
Height of a Triangle

The distance between a vertex of a triangle and the opposite side. Formally, the shortest line segment between a vertex of a triangle and the (possibly extended) opposite side. Altitude also refers to the length of this segment.

Note: The three altitudes of a triangle are concurrent, intersecting at the orthocenter.

 

 

 

See also

Base of a triangle, centers of a triangle

 


  this page updated 21-feb-16
Mathwords: Terms and Formulas from Algebra I to Calculus
written, illustrated, and webmastered by Bruce Simmons
NCTM Web Bytes December 2004 Web Bytes March 2005 Web Bytes