请问怎么证明对边互相平行且六边相等的六边形是正六边形？ 知乎 Sketch Coloring Page

请问怎么证明对边互相平行且六边相等的六边形是正六边形？ 知乎 Template

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tomski请问怎么证明对边互相平行且六边相等的六边形是正六边形？ 知乎 coloring

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