Incircle of the First Brocard Triangle = Spieker Circle of the First Brocard Triangle of the Anticomplementary Triangle.

Incircle of the First Brocard Triangle = Circumcircle of the Mid-Arc Triangle of the First Brocard Triangle.

Circumcircle of the First Brocard Triangle = Brocard Circle.

Circumcircle of the First Brocard Triangle = Circumcircle of the Second Brocard Triangle.

Circumcircle of the First Brocard Triangle = Nine-Point Circle of the First Brocard Triangle of the Anticomplementary Triangle.

Nine-Point Circle of the First Brocard Triangle = Brocard Circle of the Medial Triangle.

Nine-Point Circle of the First Brocard Triangle = Circumcircle of the First Brocard Triangle of the Medial Triangle.

Nine-Point Circle of the First Brocard Triangle = Circumcircle of the Second Brocard Triangle of the Medial Triangle.

Nine-Point Circle of the First Brocard Triangle = Circumcircle of the Euler Triangle of the First Brocard Triangle.

Nine-Point Circle of the First Brocard Triangle = Circumcircle of the Feuerbach Triangle of the First Brocard Triangle.

Spieker Circle of the First Brocard Triangle = Incircle of the First Brocard Triangle of the Medial Triangle.

Brocard Circle of the First Brocard Triangle = Circumcircle of the First Brocard Triangle of the First Brocard Triangle.

Brocard Circle of the First Brocard Triangle = Circumcircle of the Second Brocard Triangle of the First Brocard Triangle.

Orthocentroidal Circle of the First Brocard Triangle = Circumcircle of the Fourth Brocard Triangle of the First Brocard Triangle.

The Incircle of the First Brocard Triangle is concentric to the Radical Circle of the Excircles of the First Brocard Triangle of the Anticomplementary Triangle.

The Incircle of the First Brocard Triangle is concentric to the Bevan Circle of the Yff Central Triangle of the First Brocard Triangle.

The Circumcircle of the First Brocard Triangle is concentric to the Lemoine Circle.

The Circumcircle of the First Brocard Triangle is concentric to the Inverse of the Lemoine Circle in the Brocard Circle.

The Circumcircle of the First Brocard Triangle is concentric to the Inverse of the Brocard Circle in the Lemoine Circle.

The Nine-Point Circle of the First Brocard Triangle is concentric to the Lemoine Circle of the Medial Triangle.

The Nine-Point Circle of the First Brocard Triangle is concentric to the Nine-Point Circle of the Fuhrmann Triangle of the First Brocard Triangle.

The Spieker Circle of the First Brocard Triangle is concentric to the Radical Circle of the Excircles of the First Brocard Triangle.

The Spieker Circle of the First Brocard Triangle is concentric to the Bevan Circle of the Euler Triangle of the First Brocard Triangle.

The Radical Circle of the Excircles of the First Brocard Triangle is concentric to the Spieker Circle of the First Brocard Triangle.

The Radical Circle of the Excircles of the First Brocard Triangle is concentric to the Incircle of the First Brocard Triangle of the Medial Triangle.

The Radical Circle of the Excircles of the First Brocard Triangle is concentric to the Bevan Circle of the Euler Triangle of the First Brocard Triangle.

The Brocard Circle of the First Brocard Triangle is concentric to the Lemoine Circle of the First Brocard Triangle.

The Lemoine Circle of the First Brocard Triangle is concentric to the Brocard Circle of the First Brocard Triangle.

The Lemoine Circle of the First Brocard Triangle is concentric to the Circumcircle of the First Brocard Triangle of the First Brocard Triangle.

The Lemoine Circle of the First Brocard Triangle is concentric to the Circumcircle of the Second Brocard Triangle of the First Brocard Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the First Brocard Triangle of the Medial Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the Second Brocard Triangle of the Medial Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Brocard Circle of the Euler Triangle of the Anticomplementary Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Nine-Point Circle of the Second Brocard Triangle of the Anticomplementary Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the First Brocard Triangle of the Euler Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the Second Brocard Triangle of the Euler Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the Euler Triangle of the First Brocard Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the Feuerbach Triangle of the First Brocard Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the Euler Triangle of the Second Brocard Triangle.

The Circumcircle of the First Brocard Triangle is congruent to the Bevan Circle of the Feuerbach Triangle of the Second Brocard Triangle.

The Nine-Point Circle of the First Brocard Triangle is congruent to the Brocard Circle of the Euler Triangle.

The Nine-Point Circle of the First Brocard Triangle is congruent to the Nine-Point Circle of the Second Brocard Triangle.

The Nine-Point Circle of the First Brocard Triangle is congruent to the Circumcircle of the First Brocard Triangle of the Euler Triangle.

The Nine-Point Circle of the First Brocard Triangle is congruent to the Circumcircle of the Second Brocard Triangle of the Euler Triangle.

The Nine-Point Circle of the First Brocard Triangle is congruent to the Circumcircle of the Euler Triangle of the Second Brocard Triangle.

The Nine-Point Circle of the First Brocard Triangle is congruent to the Circumcircle of the Feuerbach Triangle of the Second Brocard Triangle.

The Spieker Circle of the First Brocard Triangle is congruent to the Incircle of the First Brocard Triangle of the Euler Triangle.

The Spieker Circle of the First Brocard Triangle is congruent to the Incircle of the Euler Triangle of the First Brocard Triangle.

The Spieker Circle of the First Brocard Triangle is congruent to the Nine-Point Circle of the Mid-Arc Triangle of the First Brocard Triangle.

The Bevan Circle of the First Brocard Triangle is congruent to the Brocard Circle of the Anticomplementary Triangle.

The Bevan Circle of the First Brocard Triangle is congruent to the Bevan Circle of the Second Brocard Triangle.

The Bevan Circle of the First Brocard Triangle is congruent to the Circumcircle of the First Brocard Triangle of the Anticomplementary Triangle.

The Bevan Circle of the First Brocard Triangle is congruent to the Circumcircle of the Second Brocard Triangle of the Anticomplementary Triangle.

The Orthocentroidal Circle of the First Brocard Triangle is congruent to the Brocard Circle of the Fourth Brocard Triangle.

The Orthocentroidal Circle of the First Brocard Triangle is congruent to the Circumcircle of the First Brocard Triangle of the Fourth Brocard Triangle.

The Orthocentroidal Circle of the First Brocard Triangle is congruent to the Circumcircle of the Second Brocard Triangle of the Fourth Brocard Triangle.