一个三角形有三条边。
三条边都相等的三角形叫做等边三角形。
It is called Equilateral triangle that a triangle has equal legs.
三角形有三条边和一个高。
三角形有三条边和三个角。
一个直角三角形有六部分组成，即三条边和三个角。
A triangle is composed of six parts, three sides and three angles.
其基本思想是利用与多边形两条边或三条边等距离的点的轨迹。
Its basic idea is to use the locus of the points, which are equidistant from two or three sides of a polygon.
它们也能表现为描述一个可定义概念或理论概念的性质，如“一切三角形都有三条边”。
They may also take the form of describing properties of a definable or theoretic concept, such as 'all triangles have three sides'.
例如，三角形的三条边分别是2,2,2和3,3,3，它们都是等边三角形。
For example, the triangle values 2, 2, 2 and 3, 3, 3 are both equilateral.
是的，如果你想这样做，也可以用这样的方式改变，那就是保持第三条边恒定不变。
Ah, yes, if you wanted to, indeed, we could also change things in such a way that the third side remains constant.
这个形状只有三条边，它看起来像一个箭头，底部是宽的，其他的是窄的，它是三角形！
This shia shape has three sides and it looks like an arrow. One end is wide and the other is narrow. It's a triangle!
使用最初的相等的两个手臂长度和之间的夹角为90度，可以产生第三条边，而变成等于2的平方根乘以手臂的长度。
Using the same two initial arm lengths an Angle of 90 degrees between them produces a third side which is the square root of 2 times the arm length.
随后将获得三条粗略定义的角边，用于定义指向图像中心的近似的等边三角形。
Three roughly defined corner edges are then acquired that define an approximately equilateral triangle pointed at the center of the image.
这类钻头可以有三条或四条出屑槽及相同数量的保证良好导向的导向边，这样使得加工有高精度。
This type of drill may have either three or four flutes and equal number of margins, which ensure superior guidance, thus resulting in high machining accuracy.
本发明所述木制盒由三条以上的边壁组成，其中至少一条边为曲边。
The case is composed of more than three edge walls and at least one-curved edges.
本发明所述木制盒由三条以上的边壁组成，其中至少一条边为曲边。
The case is composed of more than three edge walls and at least one-curved edges.
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