The Incircle of the Medial Triangle. The center of the Spieker circle is called the Spieker Center.

**References**

Johnson, R. A. *Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle.* Boston, MA:
Houghton Mifflin, pp. 226-228, 1929.

© 1996-9

1999-05-26