POINTS X(1113), X(1114)
r111
Stammler hyperbola
r1142
Euler line
,
Brocard circle
,
point X(237),
harmonic points
r1357
orthocenter
,
retrocenter,
Steiner point
,
Steiner circumellipse
r1785
circumcircle
,
orthocenter
,
altitudes
,
isogonal points
r1790
perspective,
cevian triangle