- Apr 20 10:13 AM
The problem is:
Let ABC be a triangle and L1,L2,L3 three parallel lines through A,B,C, resp. and let A'B'C' be the triangle bounded by the reflections of L1,L2,L3, in BC,CA,AB, resp.
As the lines L1,L2,L3 move around A,B,C, being parallel, which is the envelope of the Euler line of A'B'C'?
Furthermore, which is the envelope of the circumcircle of A'B'C'?
Comment of mine in a facebook group
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