The resultant of the vectors represented by the three Radii from the center of a Triangle's Circumcircle to its Vertices is the segment extending from the Circumcenter to the Orthocenter.

**References**

Dörrie, H. *100 Great Problems of Elementary Mathematics: Their History and Solutions.* New York: Dover, p. 142, 1965.

© 1996-9

1999-05-26