The suggest where the three altitudes of a triangle intersect. among a triangle"s point out of concurrency.

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Try this drag the orange dots on any kind of vertex to reshape the triangle. An alert the location of the orthocenter.

The altitude of a triangle (in the sense it provided here) is a line which passes with a crest of the triangle and also is perpendicular come the the contrary side. Over there are thus three altitudes possible, one from every vertex.See Altitude definition.

It transforms out the all three altitudes constantly intersect at the same allude - the so-called orthocenter of the triangle.

The orthocenter is not always inside the triangle. If the triangle is obtuse, it will certainly be outside. To do this happen the altitude lines have to be extended so they cross. Adjust the figure above and produce a triangle where the orthocenter is exterior the triangle. Follow each line and convince yourself the the three altitudes, when extended the right way, carry out in reality intersect in ~ the orthocenter.

Summary of triangle centers

There are many types of triangle centers. Listed below are 4 of the many common.Incenter located at intersection that the edge bisectors. view Triangle incenter definition How to construct the Incenter of a Triangle Circumcenter situated at intersection that the perpendicular bisectors the the political parties view Triangle circumcenter meaning How to construct the Circumcenter that a Triangle Centroid situated at intersection of the medians watch Triangle centroid an interpretation Constructing the Centroid of a Triangle.Orthocenter located at intersection that the altitudes check out Triangle orthocenter definition creating the Orthocenter that a Triangle. In the instance of an it is provided triangle,all four of the above centers occur at the very same point.

The Euler line - an interesting fact

It turns out that the orthocenter, centroid, and also circumcenter of any type of triangle space collinear- that is, they always lie top top the very same straight line called the Euler line, called after its discoverer.For more, and an interactive demonstration check out Euler line definition.

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Constructing the Orthocenter the a triangle

It is possible to build the orthocenter the a triangle using a compass and straightedge. See constructing the the Orthocenter the a triangle.

Other triangle topics


Perimeter / Area

Heron"s formula Area that an it is intended triangle

Triangle types

Triangle centers

Congruence and also Similarity

Solving triangles

Triangle quizzes and also exercises

Satellite Orbits