| r1896 |
centroid,
altimedial
triangles, concyclic points |
| r1903 |
cevian
triangle, radical center |
| r1907 |
incenter,
Euler
line,
incentric
triangle,
pedal triangle,
isogonal
points |
| r1910 |
orthocenter,
Euler
line,
altitudes |
| r1913 |
orthocenter,
circumcenter,
Euler
line,
ninecircle |
| r1917 |
orthocenter,
isogonal
points |
| r1922 |
circumcenter,
medial
triangle,
excentral triangle, Bevan
point |
| r1923 |
medial
triangle,
altitudes,
orthologic
triangles, point
X(64) |
| r1924 |
circumcenter,
tangential
triangle,
Euler
line,
homothetic triangles |
| r1937 |
orthocenter,
cevian
quotient, point X(52) |
| r1943 |
incenter,
excentral
triangle, perspective,
similar
triangles |
| r1944 |
incenter,
circumcenter |
| r1953 |
altitude
feet,
orthologic triangles |
| r1954 |
altitude
feet,
orthologic triangles,
Euler
line,
orthocenter,
circumcenter,
centroid |
| r1957 |
circumcenter,
Euler
line |
| r1958 |
incenter,
circumcircle |
| r1959 |
excenters,
circumcircle |
| r1960 |
excenters,
circumcenter,
Euler
line |
| r1982 |
incenter,
excenters |
| r1983 |
circumcenter,
altitude
feet,
Euler line, point
X(186) |
| r1991 |
circumcenter,
incenter,
excircles |
| r1993 |
circumcenter,
incenter,
concyclic
points |
| r2004 |
circumcenter,
incenter,
cevian
quotient,
radical center |
| r2005 |
orthocenter,
circumcenter,
Euler
line,
cevian
quotient, radical center |
| r2008 |
circumcenter,
Euler
line,
tangential
triangle,
homothetic triangles |
