Mittenpunkt
The Lemoine Point of the Excentral Triangle, i.e., the point of concurrence 
of the lines from theExcenters 
through the corresponding Triangle side Midpoint 
. It is also calledthe Middlespoint and has Triangle Center Function
See also Excenter, Excentral Triangle, Nagel Point
References
Baptist, P. Die Entwicklung der Neueren Dreiecksgeometrie. Mannheim: Wissenschaftsverlag, p. 72, 1992. Eddy, R. H. ``A Generalization of Nagel's Middlespoint.'' Elem. Math. 45, 14-18, 1990. Kimberling, C. ``Central Points and Central Lines in the Plane of a Triangle.'' Math. Mag. 67, 163-187, 1994. Kimberling, C. ``Mittenpunkt.''http://cedar.evansville.edu/~ck6/tcenters/class/mitten.html.
- K-Graph
- Khinchin Constant
- Khintchine-Lévy Constant
- Khintchine's Constant
- Khovanski's Theorem
- Kiepert's Conics
- Kiepert's Hyperbola
- Kiepert's Parabola
- Kieroid
- Killing's Equation
- Killing Vectors
- Kimberling Sequence
- Kimberling Shuffle
- Kings Problem
- King Walk
- Kinney's Set
- Kinoshita-Terasaka Knot
- Kinoshita-Terasaka Mutants
- Kirby Calculus
- Kirby's List
- Kirkman's Schoolgirl Problem
- Kirkman Triple System
- Kissing Circles Problem
- Kissing Number
- Kiss Surface