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Videos, worksheets, games and activities to help Geometry students learn how to construct the orthocenter of a triangle.

How to construct the Orthocenter of a Triangle?

The orthocenter is the point of concurrency of the altitudes in a triangle. A point of concurrency is the intersection of 3 or more lines, rays, segments or planes. The orthocenter is just one point of concurrency in a triangle. The others are the incenter, the circumcenter and the centroid.

This video demonstrates how to construct the orthocenter of a large scalene triangle using a compass and straightedge.

Using a straight edge and compass to create the external orthocenter of an obtuse triangle

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