| r1568 |
isogonal
points |
| r1569 |
pedal triangle,
isogonal
points |
| r1570 |
isogonal
points, circumcevian triangle,
point
X(24), orthocenter,
De
Longchamps point |
| r1571 |
circumcenter |
| r1577 |
altitudes,
orthocenter |
| r1580 |
|
| r1583 |
orthic
triangle, Euler line |
| r1587 |
circumcircle,
Simson
line, inconic |
| r1597 |
isogonal
points, orthocenter,
circumcevian
triangle, Nagel
point, tangential triangle |
| r1598 |
orthocenter,
incentric
triangle, ninecircle |
| r1602 |
circumcevian
triangle, perspective |
| r1603 |
ninecenter,
Euler
line |
| r1608 |
Yff point,
incenter |
| r1609 |
incenter,
centroid,
incircle,
pedal
triangle |
| r1611 |
orthocenter,
ninecenter,
altitude
feet,
isogonal points |
| r1617 |
|
| r1618 |
|
| r1636 |
circumcevian
triangle,
isogonal
points |
| r1637 |
circlecevian
triangle,
point X(24) |
| r1638 |
circumcevian
triangle,
perspective,
centroid,
incenter,
orthocenter,
De
Longchamps point, Bevan point, point
X(56), point X(376), point
X(24) |
| r1642 |
isogonal
points, pedal
triangle, homothetic triangles |
| r1648 |
cevian
circle, retrocenter,
symmedian
point,
point X(125) |
| r1649 |
altitudes,
altitude
feet |
| r1659 |
altitudes,
circumcircle,
Euler
line |
