<![CDATA[The purpose of this research is to overcome students' difficulties in learning similarity and congruence. This study uses a qualitative approach with descriptive methods and the technique used is the interview technique. In this study there were researchers and three students from different schools. GeoGebra is a geometry application that can be used without internet access so that it is easy to use anywhere and this application offers a variety of interesting and simple features. The results of this study show the effectiveness of applying the GeoGebra application compared to learning without the GeoGebra application, especially in the digital era. In GeoGebra there are various displays that have been provided to help the mathematics learning process such as algebraic and graphic displays, geometry displays, number processing displays, Computer Algebra System displays, 3- dimensional graphic displays and statistical probability displays.]]>
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