TY - JOUR T1 - Skúmanie dynamických konštrukcií vo vyučovaní rovnoľahlosti A1 - Lukáč, Stanislav A1 - Engel, Radovan JA - Obzory matematiky, fyziky a informatiky Y1 - 2007 VL - 36 IS - 1 SP - 15 EP - 28 SN - 1335-4981 N2 - Solving problems with using homothety belongs to difficult themes of high schools geometry. Some ideas for teaching homothety with application of guided investigation by searching solutions of selected problems and development of these problems are described in the article. Investigation is based on experimentation with dynamic constructions in the environment of the program Cabri Geometry. ER -