title = {Skúmanie dynamických konštrukcií vo vyučovaní rovnoľahlosti},
author = {Lukáč, Stanislav and Engel, Radovan},
journal = {Obzory matematiky, fyziky a informatiky},
year = {2007},
volume = {36},
number = {1},
pages = {15--28},
issn = {1335-4981},
abstract = {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.},