This article examines the pedagogical effectiveness of applying STEM approaches in teaching geometry. STEM-based education (Science, Technology, Engineering, and Mathematics) is considered a modern educational approach aimed at developing students’ spatial reasoning, analytical thinking, creativity, and research skills. The study analyzes the possibilities of using modeling, 3D visualization, GeoGebra software, project-based learning, and practical tasks in geometry instruction. A review of the scientific literature demonstrates that STEM approaches contribute to a deeper and more meaningful understanding of geometric concepts. In addition, these approaches increase students’ motivation and help connect geometry with real-life situations, engineering practices, and technological processes. The article emphasizes the importance of teachers’ professional preparedness, digital resources, and sufficient material and technical support for the successful implementation of STEM education. The findings indicate that integrating STEM technologies into geometry lessons positively influences students’ learning motivation and improves their analytical and spatial thinking skills. Thus, STEM-based instruction enhances both conceptual understanding and practical application of geometry in the educational process.