四年级下册数学同步练习-7单元8课时-三角形、平行四边形梯形整理与复习-苏教版
http://t.cn/Ri466E4苏教版小学数学四年级下册《三角形、平行四边形和梯形的整理与复习》同步练习及参考答案一、填空1、锐角三角形的三个角都是()角;直角三角形中必定有一个是()角;钝角三角形中也必定有一个角是()角。2、一个三角形三条边的长度分别是3厘米、3厘米、4厘米,它是一个()三角形;围成这个三角形要()厘米长的绳子.3、三角形按角分类分为()三角形、()三角形和()三角形.4、两组对边分别平行的四边形叫(),它具有()性。5、()的梯形叫等腰梯形,等腰梯形的()也相等.6、经过平行四边形的一个顶点可以画()条不同的高.7、()的梯形可以拼成一个平行四边形,如果平行四边形的...
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