Ninepoint
Ninepoint, often written as ninepoint, most commonly refers to the nine-point circle in triangle geometry, also known as Euler's circle. This circle passes through nine significant points associated with a given triangle: the midpoints of its three sides, the feet of its three altitudes, and the midpoints of the segments from each vertex to the orthocenter.
Geometric properties include that these nine points are concyclic on the nine-point circle. The center of this
Relation to broader geometry: The nine-point circle exists for all triangle types—acute, obtuse, and right—though certain
Other usages: Outside geometry, the term ninepoint may be adopted as a brand name or project designation