MathDB
Problems
Contests
National and Regional Contests
USA Contests
USA - College-Hosted Events
Harvard-MIT Mathematics Tournament
2019 HMIC
1
1
Part of
2019 HMIC
Problems
(1)
Euler line intersects (BIC) twice
Source: HMIC 2019 Problem 1
4/28/2019
Let
A
B
C
ABC
A
BC
be an acute scalene triangle with incenter
I
I
I
. Show that the circumcircle of
B
I
C
BIC
B
I
C
intersects the Euler line of
A
B
C
ABC
A
BC
in two distinct points.(Recall that the Euler line of a scalene triangle is the line that passes through its circumcenter, centroid, orthocenter, and the nine-point center.)Andrew Gu
geometry
HMIC