Εμφάνιση αναρτήσεων με ετικέτα PARALLELOGIC. Εμφάνιση όλων των αναρτήσεων
Εμφάνιση αναρτήσεων με ετικέτα PARALLELOGIC. Εμφάνιση όλων των αναρτήσεων

Σάββατο 6 Σεπτεμβρίου 2014

EULER LINES - PARALLELOGIC TRIANGLES - I

Let ABC be a triangle and A'B'C' the cevian triangle of P = I

Denote:

Ab = the orthogonal projection of A' on the parallel to BB' through A

Ac = the orthogonal projection of A' on the parallel to CC' through A

Similarly (cyclically) Bc, Ba and Ca,Cb.

Conjecture: ABC and The triangle bounded by the Euler lines of AAbAc, BBcBa, CCaCb are parallelogic.

Locus ?

Antreas P. Hatzipolakis. 7 September 2014

Generalization: Hyacinthos #22570

Geometrical Loci associated with the Euler Line


A CYCLOLOGIC THEOREM RELATED TO EXCENTRAL TRIANGLE.

[APH] Excentral version Let ABC be a triangle, IaIbIc the excentral triangle and P a point.. Denote Pa, Pb, Pc = same to P points of ...