Source: Miguel Ochoa Sanchez in Facebook Group PERU GEOMETRICO
It is an old problem of unknown (to me) origin. It was published also in the Greek mathematical magazine EUCLID (June 1973)
The problem:
And the solution:
Εμφάνιση αναρτήσεων με ετικέτα INCIRCLE. Εμφάνιση όλων των αναρτήσεων
Εμφάνιση αναρτήσεων με ετικέτα INCIRCLE. Εμφάνιση όλων των αναρτήσεων
Εγγραφή σε:
Αναρτήσεις (Atom)
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Theorem 1. Let ABC be an equilateral triangle and P a point. The Euler lines of the triangles PBC,PCA,PAB are concurent.Denote the point ... -
Let ABC be a triangle. Denote: (N1),(N2), (N3) = the NPCs of IBC, ICA, IAB, resp. (12), (13) = the reflections of (N1) in BI, CI, resp. ...
