It almost looks like a scale model of a dangerous cliff side.

画面看起来像等比例危险悬崖边模型。

It was an adult, as could be seen from the six rows of teeth forming an isosceles triangle in its upper jaw.

是一条成年鲨鱼，从它嘴里，在上颚上，有摆成等边三角形六排牙齿，就可以看出来。

So this leaves us, somewhat disturbingly, with three different possibilities: All  triangles really are equilateral, that's just the truth of the universe, or you can use  Euclid-style reasoning to derive false results, or there's something wrong in the proof.

所以让我们有点不安地面对三种不同可能性：所有三角形实际上是等边，就是宇宙真相，或者你可以使用欧几里得式推理得出错误，或者证明中有什么问题。

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，有一块切成等边三角形羊肉，一块切成菱形牛肉，还有一块做成旋轮线形状布丁。

Two equal length sides, and one that's different, and " equilateral" has all three sides equal length.

两条等长边， 还有一条不同边， “等边” 三条边都等长。

Actually, for that matter, since we made no  assumptions about the specific two sides we chose, it implies that any triangle is equilateral.

实际上， 既然我们对选定任意两边没有做任何假设，暗示了任何一个三角形都是等边。