| r1664 |
Euler
line, orthic triangle |
| r1665 |
Euler line |
| r1743 |
Gergonne
point, incenter,
circumconic |
| r1775 |
incenter,
perspective,
homothetic
triangles |
| r1808 |
incenter,
Kosnita
point |
| r1817 |
incircle,
incenter,
orthologic
triangles |
| r1818 |
incircle,
parallelogic
triangles |
| r1857 |
excircles,
incircle,
perspective,
medial
triangle |
| r1858 |
excircles,
incircle,
perspective,
medial
triangle |
| r1883 |
incenter |
| r1962 |
circumcenter,
incenter,
incircle,
Tixier
point |
| r2011 |
antimedial
triangle,
Euler line,
incircle,
Feuerbach
point, point X(80) |
| r2039 |
incenter,
Feuerbach
point, point X(79), altitude
feet, concyclic points, radical center |
