| r1472 |
orthologic
triangles, circumcircle,
orthocenter |
| r1492 |
circumcenter,
ninecircle,
Euler
line,
pedal
circle |
| r1511 |
tripolar,
circumconic,
perspector |
| r1528 |
Euler line,
MacBeath
conic |
| r1587 |
circumcircle,
Simson
line, circumcenter |
| r1660 |
circumcircle,
tripole,
symmedian
point,
perspector |
| r1729 |
isotomic
points, perspector |
| r1832 |
isogonal
points, concyclic points |
