Feuerbach Point

The point at which the Incircle and Nine-Point Circle are tangent. It has Triangle Center Function

References

Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, p. 200, 1929.

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

Salmon, G. Conic Sections, 6th ed. New York: Chelsea, p. 127, 1954.

• Prime Unit
• Prime Zeta Function
• Primitive Abundant Number
• Primitive Function
• Primitive Irreducible Polynomial
• Primitive Polynomial Modulo 2
• Primitive Prime Factor
• Primitive Pseudoperfect Number
• Primitive Recursive Function
• Primitive Root
• Primitive Root of Unity
• Primitive Semiperfect Number
• Primitive Sequence
• Primorial
• Prince Rupert's Cube
• Principal
• Principal Curvatures
• Principal Curve
• Principal Direction
• Principal Ideal
• Principal Normal Vector
• Principal Quintic Form
• Principal Radius of Curvature
• Principal Value
• Principal Vector