parallelogram

平行四边形英释中释na flat shape with four sides in which each side is the same length as the side opposite it and parallel to it

1 OK, so now what the area of this parallelogram?.那么现在这个平行四边形的面积是多少？

2 Now, above that I will have a parallelogram on my surface..现在在上方的曲面上，有一个平行四边形。

3 Explain again, sorry, was the question how a determinant equals the area of a parallelogram?.再解释一下，你的问题是,为什么行列式等于平行四边形的面积？