| r1554 |
circumcenter,
ninecenter |
| r1558 |
centroid |
| r1559 |
De
Longchamps point |
| r1570 |
isogonal
points, point X(24), circumcenter,
orthocenter,
De
Longchamps point |
| r1588 |
circumcircle,
Simson
line, Euler line, ninecircle,
point
X(468) |
| r1597 |
isogonal
points, orthocenter,
circumcenter,
Nagel
point, tangential triangle |
| r1602 |
circumcenter,
perspective |
| r1635 |
perspective,
antigonal
points |
| r1636 |
isogonal
points, circumcenter |
| r1638 |
perspective |
| r1640 |
Lemoine
line,
symmedian
point |
| r1652 |
isogonal
points, orthocenter,
anticomplement |
| r1671 |
orthocenter,
Euler
line, altitude feet |
| r1672 |
orthocenter,
Euler
line, altitude feet, point
X(186) |
| r1702 |
orthocenter,
circumcenter,
homothetic
triangles |
| r1703 |
orthocenter,
circumcenter,
Euler
line,
homothetic triangles |
| r1704 |
incenter,
circumcenter,
homothetic
triangles |
| r1706 |
orthocenter,
circumcenter,
Euler
line,
homothetic triangles |
| r1707 |
orthocenter,
circumcenter,
Euler
line,
homothetic triangles |
| r1708 |
incenter,
circumcenter,
homothetic
triangles |
| r1710 |
orthocenter,
circumcenter |
| r1711 |
orthocenter,
circumcenter |
| r1712 |
incenter,
circumcenter |
| r1750 |
De
Longchamps point, altitude feet, orthocenter,
circumcenter,
retrocenter,
symmedian
point, perspective |
| r1751 |
circumcenter |
