中2＿図形の性質＿正三角形の定義と性質英語版
Synopsis
本学学生が作成した小・中・高校生向け算数科・数学科・理科の補助教材動画で、学校現場や家庭学習にお使いいただけます。
![[Junior High School 2nd Year Mathematics] Triangles 5: Proving an equilateral triangle (10 minutes)](https://i.ytimg.com/vi/rnJogoI94s8/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLCuF-GiYIx48TiLWRU68ZumKNdsXw)
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