Harmonic Congugate of the Second Feuerbach Point with respect to the Incenter and Nine-point Center = Feuerbach Point.

Harmonic Congugate of the Feuerbach Point with respect to the Incenter and Nine-point Center = Second Feuerbach Point.

Harmonic Congugate of the Nagel Point with respect to the Incenter and Spieker Center = Centroid.

Harmonic Congugate of the Centroid with respect to the Incenter and Spieker Center = Nagel Point.

Harmonic Congugate of the Gergonne Point with respect to the Incenter and Outer Eppstein Point = Center of the Outer Soddy Circle.

Harmonic Congugate of the Center of the Outer Soddy Circle with respect to the Incenter and Outer Eppstein Point = Gergonne Point.

Harmonic Congugate of the Gergonne Point with respect to the Incenter and Inner Eppstein Point = Center of the Inner Soddy Circle.

Harmonic Congugate of the Center of the Inner Soddy Circle with respect to the Incenter and Inner Eppstein Point = Gergonne Point.

Harmonic Congugate of the Nine-point Center with respect to the Centroid and Orthocenter = Circumcenter.

Harmonic Congugate of the Circumcenter with respect to the Centroid and Orthocenter = Nine-point Center.

Harmonic Congugate of the Spieker Center with respect to the Centroid and Nagel Point = Incenter.

Harmonic Congugate of the Incenter with respect to the Centroid and Nagel Point = Spieker Center.

Harmonic Congugate of the Orthocenter with respect to the Circumcenter and Nine-point Center = Centroid.

Harmonic Congugate of the Centroid with respect to the Circumcenter and Nine-point Center = Orthocenter.

Harmonic Congugate of the Center of the Outer Soddy Circle with respect to the Gergonne Point and Incenter = Center of the Inner Soddy Circle.

Harmonic Congugate of the Center of the Inner Soddy Circle with respect to the Gergonne Point and Incenter = Center of the Outer Soddy Circle.

Harmonic Congugate of the Outer Eppstein Point with respect to the Gergonne Point and Incenter = Inner Eppstein Point.

Harmonic Congugate of the Inner Eppstein Point with respect to the Gergonne Point and Incenter = Outer Eppstein Point.

Harmonic Congugate of the Nine-point Center with respect to the Feuerbach Point and Second Feuerbach Point = Incenter.

Harmonic Congugate of the Incenter with respect to the Feuerbach Point and Second Feuerbach Point = Nine-point Center.

Harmonic Congugate of the Outer Eppstein Point with respect to the Center of the Outer Soddy Circle and Gergonne Point = Incenter.

Harmonic Congugate of the Incenter with respect to the Center of the Outer Soddy Circle and Gergonne Point = Outer Eppstein Point.

Harmonic Congugate of the Inner Eppstein Point with respect to the Center of the Inner Soddy Circle and Gergonne Point = Incenter.

Harmonic Congugate of the Incenter with respect to the Center of the Inner Soddy Circle and Gergonne Point = Inner Eppstein Point.

Harmonic Congugate of the Incenter with respect to the Center of the Inner Soddy Circle and Center of the Outer Soddy Circle = Gergonne Point.

Harmonic Congugate of the Gergonne Point with respect to the Center of the Inner Soddy Circle and Center of the Outer Soddy Circle = Incenter.

Harmonic Congugate of the Incenter with respect to the Inner Eppstein Point and Outer Eppstein Point = Gergonne Point.

Harmonic Congugate of the Gergonne Point with respect to the Inner Eppstein Point and Outer Eppstein Point = Incenter.