AMC10 2015 B
AMC10 2015 B · Q8
AMC10 2015 B · Q8. It mainly tests Transformations.
The letter F shown below is rotated 90° clockwise around the origin, then reflected in the y-axis, and then rotated a half turn around the origin. What is the final image?
下面的字母 F 绕原点顺时针旋转 90°，然后关于 y 轴反射，然后绕原点旋转半圈。最终图像是什么？
(A)
(B)
(C)
(D)
(E)
Answer
Correct choice: (E)
正确答案：（E）
Solution
The first rotation results in Figure 1, the reflection in Figure 2, and the half turn in Figure 3. (E matches the final figure.)
第一次旋转得到图 1，反射得到图 2，半圈旋转得到图 3。（E 匹配最终图像。）
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