1.
Total coloring of plane graphs with maximum degree six and without intersecting triangles and 4-cycles
最大度为6不含相交三角形和4-圈的平面图的全染色
2.
The Catalan numbers also count the number of ways in which an n-gon can be dissected into triangles by nonintersecting diagonals.
加泰隆数又是用不相交的对角线划分几边形成三角形的方式数。
3.
A six-pointed star formed by extending each of the sides of a regular hexagon into equilateral triangles.
六角星形把一个正六边形的各边延长相交成几个等边三角形而得到的六角星
4.
an angle formed by three or more planes intersecting at a common point (the vertex).
三个或三个以上的平面相交于一个共同的点（顶点）而形成的角。
5.
Each face is an equilateral triangle and three faces meet at each vertex.
每一个面是正三角形并且于每一个顶点处有三个面相交。
6.
an interior angle formed be two meeting walls.
两墙相交所形成的内角。
7.
a triangle with two equal sides.
有两条边相等的三角形。
8.
The two triangles coincide.
这两个三角形相重合。
9.
These two triangles coincide.
这两个三角形相互重合。
10.
the side of a right triangle opposite the right angle.
直角三角形的相对于直角的边。
11.
Construct the part of the tangent of the deltoid intercepted by the curve.
三角星形线的两条互相垂直的切线的交点在哪里?
12.
Construct two mutually orthogonal tangents of the deltoid. Where do they meet?
三角星形线的两条互相垂直的法线的交点在哪里?
13.
The point of intersection of the three altitudes of a triangle.
垂心三角形的三边垂线的交点
14.
The profit signal and noise vectors are orthogonal to each other, so the variation vector is the hypotenuse in a right triangle.
有效信号适量和噪声信号适量相互正交，所以变量矢量是直角三角形的斜边。
15.
The Exchangeable Necessary and Sufficient Condition of a Class of Upper Triangular Matrixes;
一类上三角形矩阵可交换的充要条件
16.
Single-Phase Steady-State Voltage Buildup Analysis of Delta-Connected Three-Phase Induction Generator
三角形接法三相异步发电机单相稳态建压分析
17.
Ascending Triangle
上升三角形、平顶三角形
18.
an equilateral triangle
等边三角形,正三角形