| r447 |
antimedial
triangle, orthocenter,
circumcenter, Brocard line |
| r450 |
circumconic,
circumcenter,
orthocenter, isogonal points,
isogonal
of the infinite point |
| r453 |
orthocenter,
orthic
triangle,
incenter,
homothetic triangles |
| r469 |
Vecten
points, Vecten squares |
| r477 |
antipedal
line, circumtangential triangle |
| r478 |
ninecircle,
Simson
line,
tangent circles |
| r483 |
isogonal
points, circumcenter,
cevian
triangle, orthopole |
| r484 |
orthopole,
inverse
points |
| r497 |
orthopole,
isogonal
points,
inverse points |
| r499 |
orthic
triangle,
homothetic triangles |
| r500 |
isogonal
points, point X(33), Soddy
line, incenter |
| r501 |
incenter,
excenters,
Nagel
point |
| r502 |
incenter,
excenters,
orthocenter,
circumcenter,
point
X(84) |
| r503 |
excenters,
extouch
triangle |
| r507 |
point X(115),
point
X(110), Parry point, Parry
reflection point, Parry circle, concyclic
points |
| r511 |
isogonal
points,
inverse points, similar triangles |
| r520 |
isogonal
of the infinite point, isogonal points,
circumcevian
triangle, circumconic |
| r530 |
altitudes,
orthocenter,
antimedial
triangle |
| r534 |
pedal triangle,
tangential
triangle |
| r540 |
antimedial
triangle, cevian triangle |
| r544 |
|
| r557 |
medians,
symmedian
lines,
Simson line |
| r566 |
cevian
triangle |
| r568 |
Fermat
triangles |
