Schiffler's theorem
English
Proper noun
Schiffler
's
theorem
(
geometry
)
A theorem stating that, given a
triangle
△
ABC
with the
incenter
I
, the
Euler lines
of the four triangles
△
BCI
, △
CAI
, △
ABI
, △
ABC
all meet at a single point (the
Schiffler point
).