| r1624 |
cevian
triangle, retrocenter,
orthologic
triangles |
| r1664 |
intouch
triangle, Euler line |
| r1701 |
orthocenter,
circumcenter,
ninecenter,
point
X(403), homothetic triangles |
| r1705 |
orthocenter,
circumcenter,
ninecenter,
homothetic
triangles |
| r1709 |
orthocenter,
circumcenter,
ninecenter |
| r1715 |
orthic
triangle,
Parry reflection point |
| r1716 |
circumcenter,
ninecenter,
isogonal
points, cevian quotient |
| r1732 |
circumcircle,
excircles,
Clawson
point, homothetic triangles |
| r1740 |
pedal triangle,
perspective,
orthocenter,
Gergonne
point |
| r1774 |
circumcenter,
ninecenter |
| r1780 |
orthocenter,
cevian
triangle, point X(275) |
| r1781 |
homothetic triangles |
| r1782 |
orthocenter,
homothetic
triangles |
| r1783 |
point X(275),
homothetic
triangles |
| r1803 |
Jerabek
hyperbola, parallelogic triangles |
| r1822 |
circumcenter,
Euler
line,
parallelogic
triangles |
| r1865 |
ninecenter,
perspective,
antimedial
triangle, Carnot triangle, point
X(110), point X(52) |
| r1866 |
ninecenter,
altitudes,
circumcenter,
orthocenter,
similar
triangles |
| r1872 |
ninecircle,
circumcircle,
perspective |
| r1878 |
excircles,
incenter |
| r1890 |
altitudes,
ninecenter |
| r1911 |
orthocenter,
radical
center |
| r1938 |
point X(52),
circumcenter,
medial
triangle, point X(115) |
