Complement of the Incenter = Spieker Center.

Complement of the Centroid = Centroid.

Complement of the Circumcenter = Nine-point Center.

Complement of the Orthocenter = Circumcenter.

Complement of the Gergonne Point = Mittenpunkt.

Complement of the Nagel Point = Incenter.

Complement of the de Longchamps Point = Orthocenter.

Complement of the Third Brocard Point = Brocard Midpoint.

Complement of the Centroid of the Medial Triangle = Centroid.

Complement of the Orthocenter of the Medial Triangle = Nine-point Center.

Complement of the Nagel Point of the Medial Triangle = Spieker Center.

Complement of the Circumcenter of the Intouch Triangle = Spieker Center.

Complement of the Symmedian Point of the Intouch Triangle = Mittenpunkt.

Complement of the Orthocenter of the Excentral Triangle = Spieker Center.

Complement of the Nine-Point Center of the Excentral Triangle = Nine-point Center.

Complement of the Incenter of the Anticomplementary Triangle = Incenter.

Complement of the Centroid of the Anticomplementary Triangle = Centroid.

Complement of the Circumcenter of the Anticomplementary Triangle = Circumcenter.

Complement of the Orthocenter of the Anticomplementary Triangle = Orthocenter.

Complement of the Nine-Point Center of the Anticomplementary Triangle = Nine-point Center.

Complement of the Symmedian Point of the Anticomplementary Triangle = Symmedian Point.

Complement of the Gergonne Point of the Anticomplementary Triangle = Gergonne Point.

Complement of the Nagel Point of the Anticomplementary Triangle = Nagel Point.

Complement of the Mittenpunkt of the Anticomplementary Triangle = Mittenpunkt.

Complement of the Spieker Center of the Anticomplementary Triangle = Spieker Center.

Complement of the Feuerbach Point of the Anticomplementary Triangle = Feuerbach Point.

Complement of the Second Feuerbach Point of the Anticomplementary Triangle = Second Feuerbach Point.

Complement of the Circumcenter of the Circum-Incentral Triangle = Nine-point Center.

Complement of the Orthocenter of the Circum-Incentral Triangle = Spieker Center.

Complement of the Circumcenter of the Circum-Medial Triangle = Nine-point Center.

Complement of the Circumcenter of the Circum-Orthic Triangle = Nine-point Center.

Complement of the Orthocenter of the Euler Triangle = Circumcenter.

Complement of the Orthocenter of the Fuhrmann Triangle = Spieker Center.

Complement of the Circumcenter of the Mid-Arc Triangle = Spieker Center.

Complement of the Centroid of the First Brocard Triangle = Centroid.

Complement of the Orthocenter of the First Brocard Triangle = Center of the Brocard circle.