| r1701 |
orthocenter,
ninecenter,
orthic
triangle,
point X(403), homothetic triangles |
| r1702 |
orthocenter,
circumcevian
triangle,
homothetic triangles |
| r1703 |
orthocenter,
circumcevian
triangle,
Euler
line,
homothetic triangles |
| r1704 |
incenter,
circumcevian
triangle,
homothetic triangles |
| r1705 |
orthocenter,
ninecenter,
orthic
triangle,
homothetic triangles |
| r1706 |
orthocenter,
circumcevian
triangle,
Euler
line,
homothetic triangles |
| r1707 |
orthocenter,
circumcevian
triangle,
Euler
line,
homothetic triangles |
| r1708 |
incenter,
circumcevian
triangle,
homothetic triangles |
| r1709 |
orthocenter,
ninecenter,
orthic
triangle |
| r1710 |
orthocenter,
circumcevian
triangle |
| r1711 |
orthocenter,
circumcevian
triangle |
| r1712 |
incenter,
circumcevian
triangle |
| r1713 |
orthocenter,
altitudes,
point
X(110) |
| r1716 |
ninecenter,
orthic
triangle,
isogonal points, cevian
quotient |
| r1717 |
circumcircle |
| r1719 |
|
| r1738 |
Brocard
circle, homothetic triangles |
| r1739 |
ninecenter,
perspector,
point
X(264), MacBeath
conic, ninecircle,
orthocentroidal
circle |
| r1742 |
circumcircle,
altitudes,
Euler
line |
| r1749 |
De
Longchamps point, ninecenter,
altitude
feet |
| r1750 |
De
Longchamps point, altitude feet, orthocenter,
retrocenter,
symmedian
point, circumcevian triangle,
perspective |
| r1751 |
circumcevian
triangle |
| r1753 |
centroid,
Schoute
point,
concyclic points, homothetic triangles |
| r1755 |
orthocenter |
| r1764 |
antigonal
points,
medial triangle, antipedal
triangle, Parry
reflection point, perspective,
homothetic
triangles |
