Behind the old man is a geometric shape, containing several equilateral triangles within a conical shape.

老人身后是一个几何形状，圆锥形包含几个等形。

In the first course, there was a shoulder of mutton cut into an equilateral triangle, a piece of beef into a rhomboides, and a pudding into a cycloid.

第一道菜里，有一等形的羊肉，一菱形的牛肉，还有一做旋轮线形状的布丁。

The old man's route being along one side of an equilateral triangle, while Jim's was along two sides of the same, the former was at the point of intersection long before Hayward.

老人的路线是沿着等形的一侧，而吉姆的路线是沿着等形的两侧，前者在海沃德之前很久就在交点处。