Orthocenter Finder Calculator

Understanding the Orthocenter

What is an Orthocenter?

The orthocenter is the point where the three altitudes of a triangle intersect. An altitude is a line segment from a vertex perpendicular to the opposite side (or its extension).

  • Unique point for every triangle
  • Intersection of three altitudes
  • Key center in triangle geometry
  • Related to other triangle centers

Properties of Altitudes

  • Always perpendicular to base
  • Shortest distance to opposite side
  • Equal in equilateral triangles
  • One coincides with leg in right triangles
  • Forms similar triangles

Triangle Classification by Orthocenter

Acute Triangle

Orthocenter inside

Right Triangle

Orthocenter at vertex

Obtuse Triangle

Orthocenter outside

Equilateral

Coincides with centroid

Mathematical Properties

Property Description
Distance Formula d = |ax + by + c| / √(a² + b²)
Area Relation A = (1/2) × base × height
Perpendicular Lines m₁ × m₂ = -1
Altitude Length h = 2A/b

Advanced Relationships

Euler's Theorem

  • OH = 3R cos A cos B cos C
  • H lies on Euler line
  • Related to circumcenter

Distance Properties

  • Product of distances
  • Relation to circumradius
  • Pedal triangle area

Real-World Applications

Engineering

Structural stability analysis

Architecture

Building design optimization

Physics

Center of gravity calculations

Navigation

Triangulation methods