AMC8 1999

AMC8 1999 · Q8

AMC8 1999 · Q8. It mainly tests Transformations, Geometry misc.

Six squares are colored, front and back, (R=red, B=blue, O=orange, Y=yellow, G=green, and W=white). They are hinged together as shown, then folded to form a cube. The face opposite the white face is

六个正方形被涂色，正反面（R=红，B=蓝，O=橙，Y=黄，G=绿，W=白）。它们如图所示铰接在一起，然后折叠成一个立方体。与白面相对的面是

(A) B B

(B) G G

(D) R R

(E) Y Y

Answer

Correct choice: (A)

正确答案：（A）

Solution

When G is arranged to be the base, B is the back face and W is the front face. Thus, $\boxed{\text{(A)}\ B}$ is opposite W.

当 G 被安排为底面时，B 是后脸，W 是前脸。因此，$\boxed{\text{(A)}\ B}$ 与 W 相对。

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