例句與造句

1. All tangent parallelograms for a given ellipse have the same area.
2. Each pair of conjugate diameters of an ellipse has a corresponding tangent parallelogram, sometimes called a bounding parallelogram, formed by the tangent lines to the ellipse at the four endpoints of the conjugate diameters.
3. Each pair of conjugate diameters of an ellipse has a corresponding "'tangent parallelogram "', sometimes called a "'bounding parallelogram "'( skewed compared to a bounding rectangle ).
4. It's difficult to find tangent parallelogram in a sentence. 用tangent parallelogram造句挺難的