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歡迎您訪問數學考題練習:如圖是由一些相同的小正方體構成的立體圖形的三種!

數學考題練習:如圖是由一些相同的小正方體構成的立體圖形的三種

更新時間:2024-01-12 16:32:30作者:貝語網校

如圖是由一些相同的小正方體構成的立體圖形的三種視圖,則構成這個立體圖形的小正方體的個數是

A.5

B.6

C.7

D.8

試題答案

D

試題解析

易得這個幾何體共有2層,由俯視圖可得第一層正方體的個數,由主視圖和左視圖可得第二層正方體的個數,相加即可.

解答:由俯視圖易得最底層有6個正方體,第二層有2個正方體,那么共有6+2=8個正方體組成.

故選D.

點評:考查學生對三視圖掌握程度和靈活運用能力,同時也體現了對空間想象能力方面的考查.如果掌握口訣“俯視圖打地基,主視圖瘋狂蓋,左視圖拆違章”就更容易得到答案.

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