| r1205 |
incenter,
orthologic
triangles |
| r1212 |
altitude
feet,
ninecircle,
concyclic
points |
| r1221 |
antipedal
triangle,
circumcevian
triangle, perspective |
| r1224 |
tangential
triangle,
point
X(110) |
| r1232 |
centroid,
orthocenter |
| r1278 |
isogonal
points, circumcircle |
| r1321 |
circumcevian
triangle |
| r1323 |
circumcevian
triangle, cevian triangle |
| r1333 |
altitudes,
similar
triangles |
| r1336 |
circumcircle,
poristic
triangles,
MacBeath
conic, centroid,
orthocenter |
| r1337 |
cevian
triangle |
| r1339 |
cevian
triangle, circumcircle, antimedial
triangle, homothetic triangles |
| r1351 |
Simson
line, point X(100), incenter |
| r1356 |
circumcevian
triangle, Euler line |
| r1359 |
altitude
feet, incenter, point
X(65) |
| r1368 |
perspective,
similar
triangles |
| r1405 |
Neuberg
triangle,
antimedial triangle,
orthologic
triangles, cevian
quotient,
centroid,
symmedian
point |
| r1409 |
Thebault
circles, tangent circles |
| r1412 |
Thebault
circles, Nagel point, concyclic points |
| r1413 |
Thebault
circles, Nagel point, tangent circles |
| r1421 |
circumcevian
triangle,
orthocenter,
ninecenter |
| r1432 |
incenter,
symmedian
point |
| r1434 |
Feuerbach
point, point X(100), centroid,
Nagel
point |
| r1436 |
incenter,
circumcircle,
incircle |
| r1443 |
|
