# Various Uses of Center of Gravity-Awareness Comparison as the Center of a Figure

• 투고 : 2021.08.01
• 심사 : 2021.08.31
• 발행 : 2021.08.31

#### 초록

The center of gravity of a triangle is the center of a physical shape. This is the content in the second grade of middle school, 'The Use of Similarity'. Unlike the cases of circumcenter and incenter, which are easily recognized visually, it is not easy for teachers to guide students with the visual meaning of center of gravity. According to the survey results, students, regardless of academic achievement, grade, and major, perceived the center of gravity of various plane figure as the center of their shape within a limited area through visual judgment. With reference to the results and contents of this process, it is hoped that the point of the three medians is meaningful not only in argumentative definition that the intersection of the triple line is the center of gravity of the triangle, but also in the center of a figure.

#### 과제정보

This paper was supported by Research Funds of Mokpo National University

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