資料來源 : pyDict

垂心; 重心

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Orthocenter \Or`tho*cen"ter\, n. [Ortho- + center.] (Geom.)
   That point in which the three perpendiculars let fall from
   the angles of a triangle upon the opposite sides, or the
   sides produced, mutually intersect.