Perpendicular lines were avoided, replaced by angled ones with round corners.

我们用圆角的线条代替了垂直线条。

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The 90-degree angles formed by perpendicular lines have a tendency to create visual rigidity, which in turn suggests permanence and reliability.

互相垂直的线构成的90度直角往往能创造视觉刚性，进而联想到永久与可靠。

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Are the lines perpendicular to each other?

这些直线相互垂直吗？

《牛津词典》

In fifth grade, they learn the difference between perpendicular and parallel lines while doing squats or talk about camels while doing the camel yoga pose.

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