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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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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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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