Center of gravity: the intersection of three midlines of a triangle. Vertical center: the intersection of three heights of a triangle. Inner heart: The intersection of the bisectors of the three inner angles of a triangle is equidistant from the three sides and is also the center of the inscribed circle. Eccentric: the intersection of the perpendicular lines of three sides of a triangle, which is equidistant from the three vertices and the center of the circumscribed circle.