The concurrence 
of the Euler lines 
of the triangles 
, 
, 
, and 
where 
is the incenter. It has equivalent
triangle center functions
 |  |  |
(1)
|
 |  |  |
(2)
|
and is Kimberling center 
(Kimberling 1998, p. 70).
Schiffler Point
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References
Kimberling, C. "Central Points and Central Lines in the Plane of a Triangle." Math. Mag. 67, 163-187, 1994.Kimberling, C. "Triangle Centers and Central Triangles." Congr. Numer. 129, 1-295, 1998.Kimberling, C. "Schiffler Point." http://faculty.evansville.edu/ck6/tcenters/recent/schiff.html.Kimberling, C. "Encyclopedia of Triangle Centers: X(21)=Schiffler Point." http://faculty.evansville.edu/ck6/encyclopedia/ETC.html#X21.Nguyen, K. L. "On the Complement of the Schiffler Point." Forum Geometricorum 5, 249-254, 2005. http://forumgeom.fau.edu/FG2005volume5/FG200521index.html.Schiffler, K.; Veldkamp, G. R.; and van der Spek, W. A. "Problem 1018 and Solution." Crux Math. 12, 176-179, 1986.Referenced on Wolfram|Alpha
Schiffler PointCite this as:
Weisstein, Eric W. "Schiffler Point." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SchifflerPoint.html