Construction of circles through intercepts to paralells to cevians - Jean-Pierre Ehrmann, Francisco Javier Garcia Capitan, and Alexei Myakishev...
An affine variant of a Steinhaus problem - Jean-Pierre Ehrmann Given a triangle ABC and three positive real numbers u, v, w, we prove that there...
Constructive solution of a generalization of Steinhaus' problem on partition of a triangle - Jean-Pierre Ehrmann We present a constructive...
onstruction of triangle from a vertex and the feet of two angle bisectors - Harold Connelly, Nikolaos Dergiades and Jean-Pierre Ehrmann We give...
Some geometric constructions - Jean-Pierre Ehrmann We solve some problems of geometric construction. Some of them cannot be solved with ruler and...
A projective generalization of the Droz-Farny line theorem - Jean-Pierre Ehrmann and Floor van Lamoen LTTK TEZ xin giới thiệu với bạn đọc yêu...
Steiner's theorems on the complete quadrilateral - Jean-Pierre Ehrmann We give a translation of Jacob Steiner's 1828 note on the complete...
Similar pedal and cevian triangles - Jean-Pierre Ehrmann The only point with similar pedal and cevian triangles, other than the orthocenter, is...
Some similarities associated with pedals - Jean-Pierre Ehrmann and Floor van Lamoen LTTK TEZ xin giới thiệu với bạn đọc yêu thích tạp chí Hình...
The Stammler circles - Jean-Pierre Ehrmann and Floor van Lamoen We investigate circles intercepting chords of specified lengths on the sidelines...
Congruent inscribed rectangles - Jean-Pierre Ehrmann We solve the construction problem of an interior point P in a given triangle ABC with...
A pair of Kiepert hyperbolas - Jean-Pierre Ehrmann The solution of a locus problem of Hatzipolakis can be expressed in terms of a simple...
The Simson cubic - Jean-Pierre Ehrmann and Bernard Gibert LTTK TEZ xin giới thiệu với bạn đọc yêu thích tạp chí Hình học Geometricorum một bài...
A Morley configuration - Jean-Pierre Ehrmann and Bernard Gibert LTTK TEZ xin giới thiệu với bạn đọc yêu thích tạp chí Hình học Geometricorum một...
