Orthocenter of a Triangle by rrobillard

This example demonstrates the orthocenter of a triangle, which is the point where the three altitudes of a triangle intersect. Using GeoGebra commands such as Polygon, OrthogonalLine, and Intersect, we can construct a triangle and find its orthocenter. This example is suitable for middle and high school geometry education, helping students understand the concept and geometric properties of the orthocenter.