✨ Best Answer ✨
正三角形の1つの内角60°
120°の扇形の弧が4つ分
60°の扇形の弧が4つ分
合わせて720°
円周の長さは360°分だから
720÷360で２周分=2倍
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✨ Best Answer ✨
正三角形の1つの内角60°
120°の扇形の弧が4つ分
60°の扇形の弧が4つ分
合わせて720°
円周の長さは360°分だから
720÷360で２周分=2倍
Users viewing this question
are also looking at these questions 😉
わかりやすい！！ありがとうございます！((*ﾟ∀ﾟ))