On the Fermat geometric problem - Zvonko Cerin We consider the Fermat configuration generated by a point on a circle over the side of a...
Rings of squares around orthologic triangles - Zvonko Cerin We explore some properties of the geometric configuration when a ring of six squares...
On butterflies inscribed in a quadrilateral - Zvonko Cerin We explore a configuration consisting of two quadrilaterals which share the...
The vertex-midpoint-centroid triangles - Zvonko Cerin This paper explores six triangles that have a vertex, a midpoint of a side, and the...
Loci related to variable flanks - Zvonko Cerin Let BR_1R_2C, CR_3R_4A, AR_5R_6B be rectangles build on sides of a triangle ABC such that the...
