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Triangles

Triangles of a Point
     Cevian Triangle
     Anticevian Triangle
     Pedal Triangle
     Antipedal Triangle
     Circumcevian Triangle
     Circum-Anticevian Triangle
     Cyclocevian Triangle
     Half-Cevian Triangle
     rs-Triangle
     Euler Triangle
     Hexyl Triangle
Named Cevian Triangles
     Incentral Triangle
     Medial Triangle
     Orthic Triangle
     Symmedial Triangle
     Intouch Triangle
     Extouch Triangle
Named Anticevian Triangles
     Excentral Triangle
     Antimedial Triangle
     Tangential Triangle
Named Circum-Cevian Triangles
     Circum-Incentral Triangle
     Circum-Medial Triangle
     Circum-Orthic Triangle
Named Half-Cevian Triangles
     Half-Altitude Triangle
Special Triangles
     Euler Triangle
     Feuerbach Triangle
     Intangents Triangle
     Extangents Triangle
     Fuhrmann Triangle
     Mid-Arc Triangle
     Reflection Triangle
     Yff Central Triangle
Brocard Triangles
     First Brocard Triangle
     Second Brocard Triangle
     Third Brocard Triangle
     Fourth Brocard Triangle
Triangulation Triangles
     de Villiers Triangle
Triangles Related to Triads
     Mixtilinear Triangle
     Outer Soddy Triangle
     Inner Soddy Triangle
     Apollonius Triangle
     Malfatti Central Triangle
     Contact Malfatti Triangle