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n.平行四边形
1、parallelograms pdf───平行四边形pdf
2、parallelograms cd───平行四边形
3、parallelograms kuta───库塔平行四边形
4、parallelograms are rectangles───平行四边形是矩形
5、parallelograms area───平行四边形面积
6、parallelograms act───平行四边形法
1、Work out the base or the height of the following parallelograms. (Unit: cm)───求下列平行四边形的底或高。（单位：厘米）
2、There are so many parallelograms in our daily life. Can you find it?───生活中有很多平行四边形，你能找出来吗？（电脑出示）
3、Logos incorporated starbursts and satellite shapes, while parallelograms, wings, and free-form boomerangs became the motel sign shapes du jour.───标志中包含星暴和卫星图形，平行四边行，空军徽章和各种回旋镖图形成了当时汽车旅馆的热门标志。
4、The servants cut our bread into cones, cylinders, parallelograms , and several other mathematical figures.───仆人们把我们的面包切成圆锥形、圆柱形、平行四边形和其他一些几何图形。
5、After reasoning, one can conclude that these two parallelograms are similar figures.───经过推理，可以得出这两个平行四边形是相似形。
6、a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms .───有两个全等平行面（底面）且侧面都是平行四边形的多面体。
7、Geometry mainly studies hot Numbers but figures such as triangles, parallelograms and circles, though it is related with Numbers.───几何主要不是研究数，而是形，例如三角形，平行四边形和圆，虽然它也与数有关。
1、It is the envelope of a series of parallelograms of equal area and sharing two sides.