Orthocenter Calculator
Find the orthocenter of a triangle from its three vertices.
The orthocenter is where a triangle's three altitudes meet.
The math behind it
Each altitude passes through a vertex and is perpendicular to the opposite side. Intersecting any two altitudes gives the orthocenter.
Worked example
For a right triangle, the orthocenter sits exactly at the right-angle vertex.
FAQ
Can it lie outside the triangle?
Yes — for an obtuse triangle the orthocenter is outside it.