The Half-Altitude Triangle is similar to the Anticevian Triangle of the Circumcenter.

The Half-Altitude Triangle is similar to the Pedal Triangle of the de Longchamps Point.

The Half-Altitude Triangle is similar to the Circumcevian Triangle of the de Longchamps Point.

The Half-Altitude Triangle is similar to the s-Reflection Triangle of the de Longchamps Point.

The Half-Altitude Triangle is similar to the Medial Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is similar to the Anticomplementary Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is similar to the Half-Altitude Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is similar to the Euler Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is similar to the First Brocard Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is perspective with the Anticevian Triangle of the Circumcenter.

The Half-Altitude Triangle is perspective with the Pedal Triangle of the de Longchamps Point.

The Half-Altitude Triangle is perspective with the s-Reflection Triangle of the de Longchamps Point.

The Half-Altitude Triangle is perspective with the Medial Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is perspective with the Anticomplementary Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is perspective with the Half-Altitude Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is perspective with the Euler Triangle of the Half-Altitude Triangle.

The Half-Altitude Triangle is perspective with the First Brocard Triangle of the Half-Altitude Triangle.