AMC8 1998
AMC8 1998 · Q18
AMC8 1998 · Q18. It mainly tests Transformations.
As indicated by the diagram at the right, a rectangular piece of paper is folded bottom to top, then left to right, and finally, a hole is punched at X. What does the paper look like when unfolded?
如右图所示，一张矩形纸从下折到上，然后从左折到右，最后在 X 处打一个洞。展开纸后是什么样子？
(A)
(B)
(C)
(D)
(E)
Answer
Correct choice: (B)
正确答案：（B）
Solution
Answer (B): The folded rectangle appears in the upper right corner of the sheet of paper, and the hole is punched in its upper left corner. Only Figure (B) has a hole in the upper left corner of the upper right rectangle of the unfolded sheet.
答案（B）：折叠后的矩形出现在纸张的右上角，孔打在该矩形的左上角。只有图（B）在展开后的纸张右上角矩形的左上角有一个孔。
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