r55 |
centroid,
point
X(115), ninecircle,
pedal circle |
r42 |
point X(115),
altitude
feet |
d |
Steiner dual line |
r84 |
orthopole,
Euler
line |
r125 |
altitude
feet,
Euler line |
r128 |
point X(100),
orthic
triangle |
r143 |
point X(184),
inverse
points, Brocard circle |
r217 |
ninecircle,tangent
circles |
r232 |
Lemoine
line, Brocard
circle, ninecircle, circumcircle,
tripolar, orthic
axis, cevian
quotient, centroid, retrocenter,
radical
axis |
r308 |
point X(110),
point
X(265), circumcenter,
ninecenter |
r407 |
circumcircle,
Euler
line,
cevian
triangle, circumconic,
isogonal
points, point X(115),
inverse
points |
r577 |
altitude
feet |
r578 |
ninecenter,
medial
triangle, Euler line,
orthologic
triangles |
r589 |
centroid,
point
X(468), Parry point, concyclic points |
r591 |
circumcenter,
point
X(403), ninecircle,
concyclic points |
r682 |
Steiner
dual line,
centroid,
Tarry
point |
r807 |
Stammler
hyperbola,
cevian
triangle, circumcevian triangle,
circumconic,
isogonal
points,
point X(115) |
r1023 |
orthocenter,
MacBeath
conic, isogonal points,
isotomic
points,
Tarry point |
r1151 |
point X(523),
cevian
quotient,
orthocenter |
r1172 |
inconic,
perspector,
circumcenter,
retrocenter,
Jerabek
hyperbola |
r1187 |
circumcenter,
medial
triangle, homothetic triangles |
r1385 |
Steiner
deltoid, ninecircle, point
X(74), Simson line |
r1479 |
Euler line,
homothetic
triangles |
r1560 |
Euler line,
symmedian
point,
orthologic triangles |