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歡迎您訪問數(shù)學(xué)考題練習(xí):在圖中添加一個小正方形,使該圖形經(jīng)過折疊后能圍!

數(shù)學(xué)考題練習(xí):在圖中添加一個小正方形,使該圖形經(jīng)過折疊后能圍

更新時間:2024-01-12 16:26:35作者:貝語網(wǎng)校

在圖中添加一個小正方形,使該圖形經(jīng)過折疊后能圍成一個四棱柱,不同的添法共有

A.7種

B.4種

C.3種

D.2種

試題答案

B

試題解析

由四棱柱四個側(cè)面和上下兩個底面的特征作答.

解答:由四棱柱四個側(cè)面和上下兩個底面的特征可知,不同的添法共有4種,即在沒有小正方形的一側(cè),每一個長方形的寬的左邊添加都可以.

故選B.

點評:解題時勿忘記四棱柱的特征及正方體展開圖的各種情形.

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