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 |