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你可以在这里看到七个由火柴棍做成的等边三 …
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如图所示是由八根火柴组成的正方形和菱形。 …
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这是用十根火柴棍和一粒纽扣摆出来的鸟。移 …
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这是七根火柴和一粒纽扣组成的如图所示的刺 …
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用给出的这六块碎片,拼成两个正方形。 答 …
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移动下图中4个正三角形中的4根火柴棒,使 …
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用五根火柴棒,拼出三种以上不同种类的五边 …
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如图所示,有3个用9根火柴棒组成的正三角 …
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请尝试用10根火柴棒,同时拼出10个三角 …
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