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四面体的展开图是一个三角形的每一条边都铺上一个三角形

Floor 1 巨大八爪鱼 8/23/12 13:15
因此正五胞体的展开图也是一个四面体每个面都铺上一个四面体
Floor 2 巨大八爪鱼 8/23/12 13:15

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