: Place the compass point on a vertex (e.g., vertex
: The orthocenter lies outside the triangle (you must extend the side lengths to find the intersections).
and draw another arc that intersects the first one. Label this intersection point How to Construct the Altitudes of a Triangle вЉї
To construct the altitude of a triangle, you essentially perform a geometric construction of a from a vertex to the opposite side (the base) . Step-by-Step Construction
. The segment from the vertex to the base line is the . Licensed by Google The Orthocenter : Place the compass point on a vertex (e
When you repeat this process for all three vertices, the three altitudes will intersect at a single point called the . Depending on the type of triangle, the orthocenter's location varies: Acute Triangle : The orthocenter is inside the triangle.
). Open the compass wide enough so that when you draw an arc, it intersects the opposite side ( BCcap B cap C ) at two distinct points. Step-by-Step Construction
, draw an arc below the base line. Keeping the same compass width, place the point on
