1. 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。
2. 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。
3. Logos incorporated starbursts and satellite shapes, while parallelograms, wings, and free-form boomerangs became the motel sign shapes du jour. 企业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 results show that various crystal morphologies of calcium oxalate, such as, parallelograms, plates, spheres, bipyramids etc. can be obtained depending on the experimental conditions. 发现通过改变实验条件可以合成不同形貌的草酸钙晶体，如平行四边形，片状，球形，八面双锥体等；
