Δευτέρα 29 Μαΐου 2023

PAULUS GERDES


Paulus Gerdes


Paulus Gerdes, African Pythagoras. A Study in Culture and Mathematics Education. Maputo, Instituto Superior Pedagogico, Mocambique 1994.

Mail Antreas P. Hatzipolakis

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CYCLOLOGIC

Let ABC be a triangle Denote 1. Oa, Ob, Oc = the circumcenters of HBC, HCA, HAB, resp. ABC, OaObOc are cyclologic, since Oa, Ob, Oc...

  • EUCLID 4404
  • ETC
    X(5459) Let ABC be a triangle, let A', B', C' be the midpoints of BC, CA, AB. Let L_a be the perpendicular through A' ...
  • HOMOTHETIC TRIANGLES and EULER LINES
    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 ...