Saturday, June 12, 2021

1720. Collinear Circumcenters

5 comments:

  1. If the cubic is another pivotal isogonal circular cubic K021, the fixed point is X(98).

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  2. Fixed point is singular focus of circular cubics?

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  3. https://faculty.evansville.edu/ck6/encyclopedia/SingularFocusOfCubics.html

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  4. Maybe! But I can not define the focus of a curve on a involutory plane!

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1988. Circumcenters On Euler Line

  Let ABC be a triangle with P, Q are two points on Euler line of ABC. A',B',C' are inverse images of A,B,C through circle diame...