Incircle of the Yff Central Triangle = Incircle of the Intangents Triangle of the Yff Central Triangle.

Incircle of the Yff Central Triangle = Circumcircle of the Mid-Arc Triangle of the Yff Central Triangle.

Nine-Point Circle of the Yff Central Triangle = Circumcircle of the Euler Triangle of the Yff Central Triangle.

Nine-Point Circle of the Yff Central Triangle = Circumcircle of the Feuerbach Triangle of the Yff Central Triangle.

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

Brocard Circle of the Yff Central Triangle = Circumcircle of the Second Brocard Triangle of the Yff Central Triangle.

Orthocentroidal Circle of the Yff Central Triangle = Circumcircle of the Fourth Brocard Triangle of the Yff Central Triangle.

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

The Nine-Point Circle of the Yff Central Triangle is concentric to the Nine-Point Circle of the Fuhrmann Triangle of the Yff Central Triangle.

The Spieker Circle of the Yff Central Triangle is concentric to the Radical Circle of the Excircles of the Yff Central Triangle.

The Spieker Circle of the Yff Central Triangle is concentric to the Bevan Circle of the Euler Triangle of the Yff Central Triangle.

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

The Bevan Circle of the Yff Central Triangle is concentric to the Circumcircle of the Intouch Triangle.

The Bevan Circle of the Yff Central Triangle is concentric to the Radical Circle of the Excircles of the Anticomplementary Triangle.

The Bevan Circle of the Yff Central Triangle is concentric to the Spieker Circle of the Anticomplementary Triangle.

The Bevan Circle of the Yff Central Triangle is concentric to the Circumcircle of the Mid-Arc Triangle.

The Bevan Circle of the Yff Central Triangle is concentric to the Bevan Circle of the Euler Triangle of the Anticomplementary Triangle.

The Radical Circle of the Excircles of the Yff Central Triangle is concentric to the Spieker Circle of the Yff Central Triangle.

The Radical Circle of the Excircles of the Yff Central Triangle is concentric to the Bevan Circle of the Euler Triangle of the Yff Central Triangle.

The Brocard Circle of the Yff Central Triangle is concentric to the Lemoine Circle of the Yff Central Triangle.

The Lemoine Circle of the Yff Central Triangle is concentric to the Brocard Circle of the Yff Central Triangle.

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

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

The Incircle of the Yff Central Triangle is congruent to the Spieker Circle of the Yff Central Triangle of the Anticomplementary Triangle.

The Circumcircle of the Yff Central Triangle is congruent to the Bevan Circle of the Yff Central Triangle of the Medial Triangle.

The Circumcircle of the Yff Central Triangle is congruent to the Nine-Point Circle of the Yff Central Triangle of the Anticomplementary Triangle.

The Circumcircle of the Yff Central Triangle is congruent to the Bevan Circle of the Yff Central Triangle of the Euler Triangle.

The Circumcircle of the Yff Central Triangle is congruent to the Bevan Circle of the Euler Triangle of the Yff Central Triangle.

The Circumcircle of the Yff Central Triangle is congruent to the Bevan Circle of the Feuerbach Triangle of the Yff Central Triangle.

The Nine-Point Circle of the Yff Central Triangle is congruent to the Circumcircle of the Yff Central Triangle of the Medial Triangle.

The Nine-Point Circle of the Yff Central Triangle is congruent to the Circumcircle of the Yff Central Triangle of the Euler Triangle.

The Spieker Circle of the Yff Central Triangle is congruent to the Incircle of the Yff Central Triangle of the Medial Triangle.

The Spieker Circle of the Yff Central Triangle is congruent to the Incircle of the Yff Central Triangle of the Euler Triangle.

The Spieker Circle of the Yff Central Triangle is congruent to the Incircle of the Euler Triangle of the Yff Central Triangle.

The Spieker Circle of the Yff Central Triangle is congruent to the Spieker Circle of the Intangents Triangle of the Yff Central Triangle.

The Spieker Circle of the Yff Central Triangle is congruent to the Nine-Point Circle of the Mid-Arc Triangle of the Yff Central Triangle.

The Bevan Circle of the Yff Central Triangle is congruent to the Circumcircle of the Yff Central Triangle of the Anticomplementary Triangle.