Let ABC be a triangle and A'B'C' its orthic triangle.
Denote:
Ab := The Orthogonal Projection of A' on AC
aB := The Orthogonal Projection of A' on CC'
Ac := The Orthogonal Projection of A' on AB
aC := The Orthogonal Projection of A' on BB'.
[The 4 points are collinear]
La := The Euler Line of A'AbAc
Ma := The Euler Line of A'aBaC
Similarly Eb, Ec and Mb, Mc.
We know that Ea,Eb,Ec concur at X(973) and Ma, Mb, Mc
at the Feuerbach point of A'B'C'
Now, denote:
A* := La /\ Ma, B* := Lb /\ Mb, C* := Lc /\ Mc
Conjecture:
The triangles ABC, A*B*C* are homothetic.
If so, which is the homothetic center
(perspector of ABC, A*B*C*) ?
Antreas
Denote:
Ab := The Orthogonal Projection of A' on AC
aB := The Orthogonal Projection of A' on CC'
Ac := The Orthogonal Projection of A' on AB
aC := The Orthogonal Projection of A' on BB'.
[The 4 points are collinear]
La := The Euler Line of A'AbAc
Ma := The Euler Line of A'aBaC
Similarly Eb, Ec and Mb, Mc.
We know that Ea,Eb,Ec concur at X(973) and Ma, Mb, Mc
at the Feuerbach point of A'B'C'
Now, denote:
A* := La /\ Ma, B* := Lb /\ Mb, C* := Lc /\ Mc
Conjecture:
The triangles ABC, A*B*C* are homothetic.
If so, which is the homothetic center
(perspector of ABC, A*B*C*) ?
Antreas
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