2009 AMC 8 第 4 题

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所有题目均经美国数学协会(MAA)官方合法授权使用。

4.

下面显示的五块拼片可以拼成下方五个图形中的四个。哪一个图形不能拼成?

The five pieces shown below can be arranged to form four of the five figures below. Which figure cannot be formed?

答案:B
知识点:铺砖
难度评级:720
解答:

注意选项 B 中没有任何长 55 个方格的连续线段。这说明那块长 55 个方格的拼片无法放入该图形。

所以正确答案是 B

Note that option B does not have any segments in it that are 55 blocks long. This means that it is impossible to arrange the 55 block long piece to fit within the figure.

Thus, B is the correct answer.

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