Properties: The center of gravity divides each midline into a vertex part X and a bottom part Y, where x:y=2: 1.
The intersection of three bisectors of an inner triangle
Attribute: The distances to three sides are equal.
The intersection of three heights of a vertical triangle.
Properties: Four equilateral (circumscribed) circular triangles caused by the vertical center of the triangle.
The intersection of vertical lines on three sides of the epicenter triangle.
Attribute: The distances to the three vertices are equal.
The intersection of the two bisectors of the outer angle and the third bisector of the inner angle of a near-center triangle.
Usually outside the triangle
Attribute: The distances to three sides are equal.