| r1631 |
altitude
feet, Gob point, tangent circles |
| r1657 |
altitudes,
De
Longchamps point |
| r1658 |
altitude
feet, centroid |
| r1659 |
altitudes,
circumcenter,
Euler
line |
| r1660 |
tripole,
symmedian
point,
inconic,
perspector |
| r1676 |
anticevian
triangle, Stammler hyperbola,
inverse
points |
| r1677 |
ninecircle,
isogonal
points, inverse points |
| r1678 |
cevian
triangle, orthologic triangles,
inverse
points |
| r1685 |
circumconic,
similar
triangles |
| r1686 |
centroid,
similar triangles |
| r1688 |
circumconic,
point
X(115), De Longchamps point,
Tarry
point, inverse points |
| r1691 |
point X(100),
point
X(190), Steiner circumellipse |
| r1717 |
circumcenter |
| r1720 |
isogonal
points, perspective |
| r1732 |
excircles,
orthic
triangle,
Clawson point, homothetic
triangles |
| r1734 |
excircles,
perspective,
medial
triangle, Spieker point |
| r1735 |
excircles,
perspective,
Feuerbach
point |
| r1741 |
altitudes,
De
Longchamps point |
| r1742 |
altitudes,
Euler
line,
circumcenter |
| r1769 |
circumcevian
triangle,
tripole |
| r1770 |
circumconic,
perspector,
circumcevian
triangle,
tripole |
| r1777 |
Euler line |
| r1784 |
circumcenter,
altitudes,
ninecircle |
| r1785 |
orthocenter,
altitudes,
isogonal
points, points X(1113)-X(1114) |
| r1786 |
orthocenter,
circumcevian
triangle,
medial
triangle |
