Geometrical thinking of junior high school students on the topic of lines and angles according to Van Hiele theory

Abstract

Unconsciously, we use the concept and skill that we learned from the result of doing math questions, because the laws of mathematics govern everything. We can shaping up mathematics with geometry. Furthermore, this study aims to analyze geometrical thinking of junior high school students on the topic of lines and angles according to Van Hiele theory. This research use qualitative method with subject of research were four junior high school students in Bandung District, Indonesia. The data collection technique were used test and interview. The result showed that students with high abilities were at level 1 (analysis), and students with medium and low abilities were at level 0 (visualization).