| r1787 |
orthocenter,
circumcevian
triangle,
symmedian
point, point X(24), tripolar,
cevian
product |
| r1805 |
incenter,
point
X(57),
Mannheim circles |
| r1807 |
altitudes,
point
X(64),
ninecenter,
complement,
concyclic
points |
| r1833 |
isogonal
points, incenter,
point
X(56),
Mannheim circles, Spieker
point |
| r1834 |
incenter,
Mannheim
circles,
inverse points |
| r1839 |
ninecircle,
circumcenter,
tangential
triangle |
| r1845 |
Gob point,
tangent
circles |
| r1846 |
centroid,
altitude
feet, tangent circles |
| r1855 |
incenter,
circumcevian
triangle, inverse points |
| r1856 |
incenter,
circumcevian
triangle, excenters |
| r1861 |
perspective |
| r1867 |
ninecircle,
perspective,
Kosnita
point |
| r1870 |
ninecircle,
perspective,
isogonal
points, point X(858) |
| r1872 |
ninecircle,
perspective,
orthic
triangle |
| r1873 |
Simson
line |
| r1874 |
Simson
line, medial triangle, perspective |
| r1884 |
circumcevian
triangle, isogonal points |
| r1885 |
circumcevian
triangle, circumcenter |
| r1889 |
circumcenter,
ninecircle |
| r1894 |
Simson
line, medial triangle, Steiner
deltoid, radical center |
| r1915 |
orthopole,
concyclic
points |
| r1939 |
orthocenter,
Euler
line,
point X(125) |
| r1940 |
orthocenter,
point
X(125) |
| r1941 |
incenter,
De
Longchamps point, circumcevian triangle |
| r1948 |
excenters,
Brocard
line |
