| r1897 |
centroid,
altimedial
triangles |
| r1898 |
centroid,
altimedial
triangles |
| r1899 |
orthocenter,
altimedial
triangles |
| r1900 |
orthocenter,
altimedial
triangles |
| r1904 |
excircles,
altimedial
triangles,
point X(442), radical center |
| r1905 |
excenters,
altimedial
triangles, point X(80) |
| r1906 |
excircles,
altimedial
triangles,
Spieker circle, tangent
circles |
| r1953 |
ninecenter,
orthologic
triangles |
| r1954 |
ninecenter,
orthologic
triangles,
Euler line,
orthocenter,
circumcenter,
centroid |
| r1966 |
orthocenter,
orthologic
triangles |
| r1972 |
orthocenter |
| r1973 |
circumcenter,
De
Longchamps point, orthocentroidal
circle,
homothetic triangles, inverse points |
| r1974 |
Euler line |
| r1976 |
excenters |
| r1977 |
isogonal
points, centroid,
Gob
point |
| r1978 |
orthocenter,
circumcenter,
isogonal
points, point X(389) |
| r1983 |
circumcenter,
ninecenter,
Euler
line, point X(186) |
| r1984 |
circumcenter,
symmedian
point |
| r2016 |
orthocenter,
Euler
line,
complement,
point
X(74) |
| r2017 |
orthocenter,
centroid |
| r2018 |
circumcenter,
centroid,
perspective,
Euler
line,
orthologic
triangles |
| r2021 |
circumcenter,
altitudes,
Euler
line, complement,
point
X(74) |
| r2023 |
circumcenter,
incenter,
ninecenter,
altitudes,
ninecircle,
point
X(52) |
| r2024 |
altitudes,
ninecircle,
Gob
point |
| r2039 |
incenter,
Feuerbach
point, point X(79), intouch
triangle, concyclic points, radical center |
