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汉语拼音：sān jiǎo xíng

不在同一直线上的三点，用线段连接起来的封闭图形。三角形中，有一个角是直角的叫直角三角形；有两条边相等的叫等腰三角形；三条边都相等的叫等边三角形或正三角形。

1. 把不在一直线上的三点，两两用线段连接起来的图形。各点称为“顶点”，连接二顶点的线段称为“边”，每两边所夹的角称为“内角”。也称三边形。

• Of course, there is also one which arise from the angle bisectors, but I cannot recall off hand if it has a special name.

  当然，还有源自角平分线的三角形，但我现在我无法马上想起它的特殊名称。

• In this paper, we give a method for cutting out a maximal equilateral triangle from a square and a strict proof of this method.

  给出从给定正方形中裁出边长（或面积）最大的正三角形的方法及其严格证明。

• If any of these points are connected to each other, then we have found a triangle of three mutual friends.

  如果这些点相互连接，我们得到一个三角形，有三对人互为朋友。

• To facilitate modification and annotation of the image, the triangle coordinates are printed out to be applied to the image later.

  为了便于对图像进行修改和注释，将输出三角形坐标以便稍后应用到图像中。

• There it was, the rattler with its triangular head, all coiled up with its rattles in the centre and its head pointed towards you.

  那条响尾蛇就在那儿，有着三角形的脑袋，整个身子盘了起来，尾巴在中央，头指向你。

• The other point of such a triangle is known as a Trojan point, or a Lagrangian point, named after the mathematician who discovered them.

  三角形的另一个顶点称为特洛伊点，或以发现它的数学家命名为拉格朗日点。

• The Egyptian pyramids are massive monuments with a square base and four triangular sides rising up to a point.

  埃及金字塔是巨大的历史遗迹，这是以正方形的为基底、四面成三角形不断上升直到汇聚到一点。

• At this point we're ready to start mixing things up a bit, what with the triads and the complementary colors and all.

  现在，我们准备把颜色混合起来，就是将三角形顶点颜色和互补色以及其他颜色混合起来。

• The sum of the lengths of any two sides of a triangle is greater than or equal to the length of the remaining side.

  一个三角形的任两边长之和一定大于或等于第三边的长度