| r1509 |
orthic
triangle, orthocenter, orthologic
triangles |
| r1512 |
cevian
triangle |
| r1527 |
incenter,
circumcenter,
tangential
triangle |
| r1602 |
circumcevian
triangle, circumcenter |
| r1604 |
cevian
triangle, side triangle |
| r1613 |
incenter,
intouch
triangle |
| r1623 |
cevian
triangle, retrocenter,
De
Longchamps point, medial triangle |
| r1632 |
cevian
triangle, cyclocevian points |
| r1635 |
circumcevian
triangle,
antigonal
points |
| r1638 |
circumcevian
triangle |
| r1643 |
|
| r1651 |
Feuerbach
point, medial triangle, extouch
triangle, side triangle |
| r1654 |
Gergonne
point, centroid |
| r1656 |
excircles,
incircle,
intouch
triangle, tangent circles |
| r1720 |
circumcircle,
isogonal
points |
| r1721 |
Euler line,
Jerabek
hyperbola, similar triangles |
| r1734 |
circumcircle,
excircles,
medial
triangle, Spieker point |
| r1735 |
circumcircle,
excircles,
Feuerbach
point |
| r1737 |
excircles |
| r1740 |
orthic
triangle,
pedal triangle, orthocenter,
Gergonne
point |
| r1750 |
De
Longchamps point, altitude feet, orthocenter,
circumcenter,
retrocenter,
symmedian
point, circumcevian triangle |
| r1764 |
antigonal
points,
medial triangle, antipedal
triangle, circumcenter,
Parry
reflection point, homothetic triangles |
| r1767 |
circumcenter,
ninecenter,
Jerabek
hyperbola, pedal triangle |
| r1768 |
isogonal
points, pedal
triangle |
| r1775 |
incenter,
intouch
triangle, homothetic triangles |
