四年级下册数学单元测试-第一单元-苏教版
http://t.cn/Ri466E4第一单元演练一、填空题。1.如果一个图形沿着一条直线对折,两侧的图形能够完全重合,这样的图形就叫()图形,那条直线就是( )。2.等边三角形有( )条对称轴。3.下列现象,哪些是“平移”,哪些是“旋转”?(1)张叔叔在笔直的公路上开车,方向盘的运动是( )。(2)升国旗时,国旗的升降运动是( )。(3)妈妈用拖布擦地是( )。(4)自行车的车轮的转动是( )。二、判断题。(对的画“√”,错的画“✕”)1.长方形和正方形都是轴对称图形。( )2.长方形只有两条对称轴。( )3.图形平移后,图形的形状不会改变。( )4.图形旋转后,图形的形...
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