| r1989 |
circumcenter,
De
Longchamps point, radical center |
| r1994 |
circumcenter,
incenter |
| r1996 |
orthocenter,
ninecircle |
| r2005 |
orthocenter,
circumcenter,
ninecenter,
cevian
quotient, radical center |
| r2008 |
circumcenter,
ninecenter,
tangential
triangle,
homothetic triangles |
| r2009 |
orthocenter,
circumcenter,
ninecenter,
excenters,
ninecircle |
| r2011 |
intouch
triangle, antimedial triangle,
incircle,
Feuerbach
point, point X(80) |
| r2015 |
orthocenter |
| r2016 |
orthocenter,
complement,
altitude
feet, point X(74) |
| r2018 |
circumcenter,
centroid,
altitude
feet, perspective,
orthologic
triangles |
| r2020 |
circumcenter,
altitudes |
| r2021 |
circumcenter,
altitudes,
complement,
altitude
feet, point X(74) |
| r2029 |
circumcenter,
centroid |
| r2033 |
circumcenter,
incenter,
excentral
triangle, pedal triangle, orthologic
triangles, Feuerbach hyperbola |
| r2046 |
Lemoine
circles |
| r2047 |
Lemoine
circles,
symmedian point |
| r2054 |
orthocenter,
altitudes,
isogonal
points, homothetic triangles |
| r2056 |
altitude
feet, orthocenter,
isogonal
points, circumcircle,
ninecircle |
| r2060 |
centroid |
| r2068 |
point X(74),
orthiac
triangles,
symmedian point |
| r2073 |
|
| r2074 |
Kosnita
point |
| r2077 |
Euler line |
