circumcenter
In geometry, the center of the circumscribed circle of a triangle. Contrasts with 内心 (incenter).
See also: 内心
The circumcenter of a triangle is the intersection point of the perpendicular bisectors of its sides.
In geometry, 内心 is the incenter of a triangle while 外心 is its circumcenter, the two being distinct reference points.
From 外 (outside) + 心 (center), a straightforward kanji compound for the circumcenter in geometry.