| r1698 |
Thomsen
hexagon, concyclic points |
| r1728 |
orthocenter,
De
Longchamps point, pedal triangle,
Brocard
line |
| r1747 |
Fermat
points, isodynamic points,
Parry
reflection point, Parry circle, point
X(110), concyclic points |
| r1753 |
circumcenter,
Schoute
point,
concyclic points, homothetic triangles |
| r1757 |
symmedian
point |
| r1766 |
symmedian
point, Wallace hyperbola, circumconic |
| r1779 |
symmedian
point, circumcevian triangle,
perspective,
isotomic
points, point X(262) |
| r1801 |
incenter,
excenters,
circumcenter,
extangential
triangle,
parallelogic triangles |
| r1836 |
Schoute
point,
Brocard line,
homothetic
triangles |
| r1838 |
perspector,
homothetic
triangles |
| r1846 |
circumcircle,
altitude
feet, tangent circles |
| r1851 |
incenter,
extouch
triangle |
| r1853 |
ninecircle,
Spieker
point |
| r1886 |
circumcevian
triangle, tangential triangle,
perspective,
Gob
point |
| r1896 |
ninecenter,
altimedial
triangles, concyclic points |
| r1897 |
altimedial
triangles, altitude feet |
| r1898 |
altimedial
triangles, altitude feet |
| r1954 |
ninecenter,
altitude
feet,
orthologic triangles,
Euler
line,
orthocenter,
circumcenter |
| r1977 |
altitude
feet, isogonal points, Gob
point |
| r1979 |
|
| r2007 |
pedal triangle |
| r2017 |
orthocenter,
altitude
feet |
| r2018 |
circumcenter,
altitude
feet, perspective,
Euler
line,
orthologic
triangles |
| r2029 |
circumcenter,
Euler
line |
| r2030 |
circumcenter,
ninecenter,
medians |
