perpendicularity

The builder used a laser level to check the perpendicularity of the new fence posts.

用法提示：perpendicularity 是名词，作宾语，表示“垂直性”。

In math class, we studied the perpendicularity of two intersecting lines.

用法提示：perpendicularity 是名词，作宾语，指两条线之间的垂直状态。

The perpendicularity of the tower is important for its safety and appearance.

用法提示：perpendicularity 是名词，作主语，表示“垂直状态”。