Click on the checkboxes to see the [color=#0a971e]Orthocenter[/color], [color=#c51414]Centroid[/color], [color=#1551b5]Circumcenter[/color], and [color=#b20ea8]Incenter[/color] of a triangle. Drag the vertices A, B, and C, to see the changing behavior of these center points and circles.[br][br]The line that intersects the [color=#0a971e]Orthocenter[/color], [color=#c51414]Centroid[/color], and [color=#1551b5]Circumcenter[/color] is called the [color=#d69210]Euler Line[/color].