Triangle centers with Triangle Center Functions of the form are called th Power points. The 0th power point is the Incenter, with Triangle Center Function .

**References**

Groenman, J. T. and Eddy, R. H. ``Problem 858 and Solution.'' *Crux Math.* **10**, 306-307, 1984.

Kimberling, C. ``Problem 865.'' *Crux Math.* **10**, 325-327, 1984.

Kimberling, C. ``Central Points and Central Lines in the Plane of a Triangle.'' *Math. Mag.* **67**, 163-187, 1994.

© 1996-9

1999-05-26