Internal Similitude Center of the Apollonius Circle and Nine-Point Circle = Spieker Center.

Internal Similitude Center of the Apollonius Circle and Bevan Circle of the Medial Triangle = Spieker Center.

Internal Similitude Center of the Apollonius Circle and Apollonius Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Apollonius Circle and Circumcircle of the Orthic Triangle = Spieker Center.

Internal Similitude Center of the Apollonius Circle and Apollonius Circle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Apollonius Circle and Circumcircle of the Euler Triangle = Spieker Center.

Internal Similitude Center of the Apollonius Circle and Circumcircle of the Feuerbach Triangle = Spieker Center.

Internal Similitude Center of the Circumcircle and Incircle = Internal Center of Similitude of Circumcircle and Incircle.

Internal Similitude Center of the Circumcircle and Nine-Point Circle = Centroid.

Internal Similitude Center of the Circumcircle and Circumcircle of the Orthic Triangle = Centroid.

Internal Similitude Center of the Circumcircle and Circumcircle of the Intouch Triangle = Internal Center of Similitude of Circumcircle and Incircle.

Internal Similitude Center of the Circumcircle and Nine-Point Circle of the Intouch Triangle = Incenter.

Internal Similitude Center of the Circumcircle and Nine-Point Circle of the Excentral Triangle = Circumcenter.

Internal Similitude Center of the Circumcircle and Circumcircle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Circumcircle and Nine-Point Circle of the Anticomplementary Triangle = Circumcenter.

Internal Similitude Center of the Circumcircle and Spieker Circle of the Anticomplementary Triangle = Internal Center of Similitude of Circumcircle and Incircle.

Internal Similitude Center of the Circumcircle and Circumcircle of the Euler Triangle = Centroid.

Internal Similitude Center of the Circumcircle and Nine-Point Circle of the Euler Triangle = Skordev Point.

Internal Similitude Center of the Circumcircle and Circumcircle of the Feuerbach Triangle = Centroid.

Internal Similitude Center of the Circumcircle and Circumcircle of the Mid-Arc Triangle = Internal Center of Similitude of Circumcircle and Incircle.

Internal Similitude Center of the Incircle and Nine-Point Circle = Second Feuerbach Point.

Internal Similitude Center of the Incircle and Spieker Circle = Centroid.

Internal Similitude Center of the Incircle and Incircle of the Intouch Triangle = Yff Center of Conguence.

Internal Similitude Center of the Incircle and Nine-Point Circle of the Excentral Triangle = Internal Center of Similitude of Circumcircle and Incircle.

Internal Similitude Center of the Incircle and Incircle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Incircle and Nine-Point Circle of the Anticomplementary Triangle = Internal Center of Similitude of Circumcircle and Incircle.

Internal Similitude Center of the Incircle and Radical Circle of the Excircles of the Anticomplementary Triangle = Incenter.

Internal Similitude Center of the Incircle and Spieker Circle of the Anticomplementary Triangle = Incenter.

Internal Similitude Center of the Incircle and Spieker Circle of the Euler Triangle = Skordev Point.

Internal Similitude Center of the Incircle and Incircle of the Yff Central Triangle = Yff Center of Conguence.

Internal Similitude Center of the Nine-Point Circle and Nine-Point Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Nine-Point Circle and Nine-Point Circle of the Excentral Triangle = Centroid.

Internal Similitude Center of the Nine-Point Circle and Nine-Point Circle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Nine-Point Circle and Spieker Circle of the Anticomplementary Triangle = Second Feuerbach Point.

Internal Similitude Center of the Nine-Point Circle and Nine-Point Circle of the Euler Triangle = Center of the Orthocentroidal circle.

Internal Similitude Center of the Nine-Point Circle and Nine-Point Circle of the Fuhrmann Triangle = Nine-point Center.

Internal Similitude Center of the Radical Circle of the Excircles and Spieker Circle = Spieker Center.

Internal Similitude Center of the Radical Circle of the Excircles and Radical Circle of the Excircles of the Medial Triangle = Centroid.

Internal Similitude Center of the Radical Circle of the Excircles and Radical Circle of the Excircles of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Bevan Circle and Spieker Circle = Mittenpunkt.

Internal Similitude Center of the Bevan Circle and Bevan Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Bevan Circle and Nine-Point Circle of the Intouch Triangle = Incenter.

Internal Similitude Center of the Bevan Circle and Circumcircle of the Anticomplementary Triangle = Spieker Center.

Internal Similitude Center of the Bevan Circle and Bevan Circle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Spieker Circle and Spieker Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Spieker Circle and Spieker Circle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Brocard Circle and Lemoine Circle = Center of the Brocard circle.

Internal Similitude Center of the Brocard Circle and Brocard Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Brocard Circle and Brocard Circle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Brocard Circle and Circumcircle of the First Brocard Triangle = Center of the Brocard circle.

Internal Similitude Center of the Brocard Circle and Nine-Point Circle of the First Brocard Triangle = Centroid.

Internal Similitude Center of the Brocard Circle and Circumcircle of the Second Brocard Triangle = Center of the Brocard circle.

Internal Similitude Center of the Orthocentroidal Circle and Orthocentroidal Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Orthocentroidal Circle and Orthocentroidal Circle of the Anticomplementary Triangle = Centroid.

Internal Similitude Center of the Lemoine Circle and Lemoine Circle of the Medial Triangle = Centroid.

Internal Similitude Center of the Lemoine Circle and Lemoine Circle of the Anticomplementary Triangle = Centroid.