当实现对等边三角形和等腰三角形的测试时，我认识到我只用了delta值来用于直角三角形的计算。

As I implemented the tests for equilateral and isosceles triangles, I realized that I was using only the delta value for calculations in right triangles.

youdao

人类通常是通过一个物体上下间的的垂直角度来计算与它相隔的距离。

Humans are wired to calculate the distance of an object by using the vertical Angle between its top and bottom.

youdao

此示例通过对两个变量应用SQUARE函数然后计算其和的平方根，返回直角三角形第三边的长度。

This example returns the length of the third side of a right triangle by applying the SQUARE function to two variables and then calculating the square root of their sum.

youdao

I want to compute the length of the hypotenuse of a right triangle.

我想计算下,直角三角形的斜边。

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