Well, there's actually four directions from that point that you can go staying at the same height.

实际上从那个点，你可以朝着四个方向走,而保持在同一海拔高度。

youdao

Hence, all we need is one point, the lower left-hand point will do, and the height and width of the rectangle.

于是，我们所需要的就是一个点，左下角的点就可以，以及长方形的高度和宽度。

youdao

The only thing that matters is the difference in height between point a and point b.

唯一有关的，就是点a和点b的，高度差。

youdao

Need to get the base in. Second thing I want to do, I need to get the height, so I'm going to input a value for the height, also as a float, a floating point.

也就是输入底的值，第二件我想要做的，事情就是得到三角形的高,因此我会输入一个值作为三角形的高，同样也是一个浮点数。

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