三维图形初步认识与分类专项训练.pdfVIP

Specialtrainingone:Classificationof

commonthree-dimensionalgraphics

Three-dimensionalfiguresaregeometricfiguresinwhichallparts

arenotinthesamene.Commonthree-dimensionalfiguresinclude

fourcategories:cylinder(cylinder,prism),cone(cone,pyramid),cone

(truncatedcone,prism)(willlearnlater)andsphere(ball).

Classifiedbycolumn,

cone,sphere

1.Asshowninthefigure,botharecylinders()

AB

CD

2.Inthefigureasshowninthefigure,thecylinderis,and

theprismis.(Fillintheserialnumber)

(Question

2)

3.(1)Classifythethree-dimensionalfiguresinthepictureaccordingtotheir

characteristicsandexintheclassificationcriteria;

(2)Whatarethecharacteristicsof3and6inthepicture?Whatarethe

similaritiesanddifferences?

(第3题)

按有无曲面分类

4.下列几何体中表面都是平面的是()

A．圆锥B．圆柱C．棱柱D．球体

5.把一个三角尺绕任意一条边所在直线旋转一周得到一个几何体，则这个

几何体曲面．(填“有”或“无”)

6.如图所示，按组成的面来分类，至少有一个面是平面的图形有，

至少有一个面是曲面的图形有．

(第6题)

7.将下列图按有无曲面分类．

(第7题)

(Question