HYACINTHOS 21938

Antreas P. Hatzipolakis

 

 

Thanks, Randy!

And the following maybe I have posted it before, but have no time to serach
(for I an posting also
in the same time to other places ! Here is an ongoing discussion:
https://www.facebook.com/permalink.php?story_fbid=455903497819085&id=100001983178784)


Let ABC be a triangle, P, P* two isogonala conjugate points.

Denote:

Ra = radical axis of (NPC_PBC), (NPC_P*BC)

Rb = radical axis of (NPC_PCA), (NPC_P*CA)

Rc = radical axis of (NPC_PAB), (NPC_P*AB)

Which is the locus of P such that Ra,Rb,Rc are concurrent?
The entire plane?

APH