(Universidade Federal de Goiás, 2015-05-27) Assunção, Ricardo Gomes; Bergamaschi, Paulo Roberto; http://lattes.cnpq.br/6961717072558004; Bergamaschi, Paulo Roberto; Leandro, Bianka Carneiro; Santos Júnior, Porfírio Azevedo dos
The aim of this paper is to study the isometries and homotheties, known geometric
transformations of the plane, by means of the congruence and similarity of plane geometric
figures. In order to explore and facilitate the understanding of the concepts of these two
geometric transformations, some activities with congruent and similar geometric figures
are proposed in a manageable teaching materials which were created for this purpose,
called isometric plane, and also in GeoGebra software. These activities were applied to
a first-year high school class of the Instituto Federal Goiano - Campus Uruta´ı, and some
comments (observed results) about this application, they are presented.