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2018_2019学年七年级数学上册第一章丰富的图形世界1.2展开与折叠（第2课时）课件（新版）北师大版.ppt

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第二课时,圆柱的侧面展开图是 ;圆锥的侧面展开图是 .,长方形,扇形,1,2,3,4,答案,1. (2017北京中考)右图是某个几何体的展开图,该几何体是( ). A.三棱柱 B.圆锥 C.四棱柱 D.圆柱,1,2,3,4,答案,2.左下图是一个长方体包装盒,它的平面展开图是 ( ).,1,2,3,4,答案,3.下列图形是圆锥的表面展开图的是( ).,1,2,3,4,答案,4.若下图是某几何体的表面展开图,则这个几何体是 .,

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