五年级数学几何专项练习
填空1、两个完全相同的等腰直角三角形可以拼成一个(形)或(形)或(形)。2、两个完全相同的梯形可能拼成一个(形)或(形)或(形)。3、当梯形的上底与下底相等时,梯形就变成(形)。4、平行四边形的面积公式是()。5、一个平行四边形和一个三角形的面积相等,而且它们的的底边也相等,三角形的高是10厘米,平行四边形的高是()。选择6、过平行四边形的一个顶点可以向它的对边画()条高。A.无数B.1C.2D.37、下面四句话中,错误的是()。A.平行四边形的对边平行而且相等;B.平行四边形有无数条高;C.平行四边形两条平行边之间的距离处处相等;D.平行四边形的两条对角线一定相等。8、图中有()个梯形,有(...
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