沪教版五年级数学图形与几何专项练习
第十六课(图形与几何)姓名:一、填空。1、左图中,线段有()条,射线有()条,ABCD直线有()条。2、三条直线a、b、c,a⊥b、a⊥c,则b()c。3、把一个周角平均分成6份,每份是一个()角。4、长方形的周长是19厘米,长是7厘米,它的面积是()平方厘米。5、一个等腰三角形,顶角是50°,则底角是()。6、把一个梯形的上底增加3厘米,下底减少3厘米,高不变,正好是一个面积为30平方厘米的平行四边形,梯形的面积是()平方厘米。7、长方体的棱长总和是80分米,长是9分米,是宽的1.5倍,则高是()分米,表面积是()平方分米,体积是()立方分米。8、长方形ABCD的面积是60平方厘米,AF=2...
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