Abstract

Visual-based teaching plays a crucial role in developing students' mathematical thinking, with GeoGebra, especially its 3D version, offering an interactive and intuitive way to visualize concepts and theorems. This paper explores the connection between GeoGebra and geometry, clarifying the requirements for using the software to support geometry teaching. It further demonstrates how GeoGebra can be used to visualize the theorem "Condition for a line to be perpendicular to a plane," allowing students to analyze geometric relationships from different perspectives. Lastly, the paper provides conclusions and recommendations to optimize the application of GeoGebra in mathematics teaching.

Keywords: Visualization, geogebra software, geometry, theorem, a line perpendicular to a plane.