parallelogram GMAT

1.A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.

四个边相等平行四边形；不是直角等边平行四边形。

2.In this chapter, we partially solve the problem of inner radius of univalence for some parallelogram, applying the properties of extremal sets of Schwarz derivatives.

在这一章中我们利用Schwarz 导数极值集重要性质部分解决了几类平行四边形单叶性内径。