To search out these answers, I created raised-line drawings of five different wheels, depicting spokes with lines that curved, bent, waved, dashed and extended beyond the perimeter of the wheel.

为了找到答案，我用凸起的线条画了 5 个不同的轮子，辐条用不同线条表现，分别为弧线、弯曲线、浪线、虚线以及延伸到轮子外的线条。