| r1785 |
circumcircle,
altitudes,
isogonal
points, points X(1113)-X(1114) |
| r1786 |
circumcircle,
circumcevian
triangle,
medial
triangle |
| r1787 |
circumcircle,
circumcevian
triangle,
symmedian
point, point X(24), tripolar,
cevian
product |
| r1790 |
perspective,
cevian
triangle, circumcenter |
| r1793 |
rEuler line,
circumcevian
triangle, ninecircle |
| r1796 |
circumcenter,
isogonal of the infinite point, circumconic |
| r1798 |
Euler line |
| r1799 |
ninecircle,
inverse
points, similar triangles |
| r1819 |
circumcenter,
altitude
feet, parallelogic triangles |
| r1848 |
ninecenter |
| r1866 |
ninecenter,
orthic
triangle,
altitudes,
circumcenter,
similar
triangles |
| r1868 |
ninecircle,
Mittenpunkt,
tangent
circles |
| r1880 |
circumcenter,
ninecenter,
radical
center |
| r1899 |
altimedial
triangles, altitude feet |
| r1900 |
altimedial
triangles, altitude feet |
| r1902 |
symmedian
point,
circumcevian triangle,
incentric
triangle |
| r1909 |
incenter,
altitudes,
point
X(265) |
| r1910 |
ninecenter,
Euler
line,
altitudes |
| r1911 |
orthic
triangle, radical center |
| r1913 |
circumcenter,
ninecenter,
Euler
line,
ninecircle |
| r1916 |
circumcenter,
isogonal
points, circumcevian triangle |
| r1917 |
ninecenter,
isogonal
points |
| r1926 |
circumcenter,
tangential
triangle,
orthologic
triangles, point X(265) |
| r1930 |
incenter,
excenters |
| r1937 |
ninecenter,
cevian
quotient, point X(52) |
